loopxxi
LoopXXI

Paid software for people and AI agents. Encrypted user-owned data. Verified outcomes. Simple purchase paths.

Public Key

npub12yyk7k4nlp42z87kv83yraaa3c8jtcaqu3rt3u48rf4crr25v8gq6k0293

NIP-05 Address

Profile Code

nprofile1qqs9zzt0t2els64prltxrcjp777cure9uwswg34c72n356up342xr5qpz3mhxue69uhhyetvv9ujuerpd46hxtnfduqs6amnwvaz7tmwdaejumr0dsx8e6sy

Publishing to

relay.damus.io

nos.lol

Author Public Key

npub12yyk7k4nlp42z87kv83yraaa3c8jtcaqu3rt3u48rf4crr25v8gq6k0293

Show more details

Last Notes

2026-09-06 13:34:15 UTC

We keep asking why Bitcoin keeps going up.
Change the denominator. Change the time horizon.
Many major currencies and commodities have fallen substantially when measured in Bitcoin over the long run. Historical patterns are not promises.
The real crash may be hiding in the unit of account.
Loop XXI · Research & education
https://blossom.primal.net/adbac46755dd0e36be2206f6c71aaf06848842bcb6c90edcff94c4c35b0c221f.mp4

2026-09-06 00:43:34 UTC

The balance is not the buying power
Block 965,693 · Loop XXI
Money is a number. Purchasing power is what that number can do.
Measure the life it buys
A bank balance measures dollars. It does not directly measure the groceries, rent, energy, or time those dollars can buy. Keeping the number unchanged can still mean losing ground when prices rise.
A recent post by SightBringer raises a useful question: can a currency remain central to payments while becoming a less attractive place to keep long-term savings? Our answer starts with separating liquidity from purchasing power. A useful transaction medium and a durable store of value are different functions.
A small rate. A long horizon.
Consider an illustration: prices rise at a constant 2% each year, and cash earns no interest. After 35 years, the same cash buys about half the original basket. The calculation is 1 / 1.02^35, or approximately 0.50. This is a scenario, not a forecast or a measure of current inflation.
The Federal Reserve describes 2% inflation, measured by the personal consumption expenditures price index, as its longer-run objective. The Bureau of Labor Statistics uses the Consumer Price Index to describe another measure of consumer-price changes. These measures differ, and neither is a perfect match for every household. Interest earned, taxes, changing wages, and individual spending patterns affect the actual outcome.
The other side of a dollar promise
Inflation can reduce the purchasing-power burden of a debt fixed in nominal dollars. The contract may still require the same number of dollars even as those dollars buy less. Unexpected inflation particularly changes the bargain made when the loan was priced.
That does not make debt a free advantage. Rates can reset. New borrowing can become more expensive. Wages and revenues may lag costs. Nor does inflation guarantee that property, shares, gold, or Bitcoin will rise. Valuation, financing, productivity, and demand still matter.
Ownership needs a reason
Our long-term lens is to study the source of value behind an asset: a useful business, a productive capability, a durable right, or a credible monetary rule. A higher quoted price alone does not prove that more real value was created.
Bitcoin offers a supply limit of 21 million under its current consensus rules. That constraint is distinct from a promise about market price. Bitcoin can be volatile, and ownership brings security and custody decisions. Scarcity alone does not guarantee a positive return or reliable short-term purchasing power.
Two jobs for company capital
Cash serves near-term obligations and flexibility. Long-term capital serves a different horizon. Treating those jobs separately helps a business avoid depending on the sale of a volatile asset to pay an immediate bill.
Loop XXI is a private holding and capital allocation company. Our aim is to build useful businesses and allocate company capital with discipline over time. That is a direction for the work, not a claim of current holdings or performance.
The question we will keep asking is simple: what does this capital make possible, and will that usefulness endure?
Read the article and watch the film:
https://loopxxi.com/journal/the-balance-is-not-the-buying-power
Sources:
SightBringer: the source post and thesis: https://x.com/_the_prophet__/status/2096359485300515133
Federal Reserve: the longer-run inflation objective: https://www.federalreserve.gov/faqs/economy_14400.htm
Bureau of Labor Statistics: CPI inflation calculator and methodology: https://www.bls.gov/data/inflation_calculator.htm
IMF: unexpected inflation and the real value of debt: https://www.imf.org/en/Blogs/Articles/2023/04/03/fiscal-policy-can-help-tame-inflation-and-protect-the-most-vulnerable
Bitcoin.org: supply rules, volatility and responsibilities: https://bitcoin.org/en/faq

2026-09-06 00:34:31 UTC

Your balance can stay the same while your buying power falls.
A short film on inflation, ownership, and Bitcoin’s supply rule.
Inspired by SightBringer:
https://x.com/_the_prophet__/status/2096359485300515133
Research & education · Loop XXI
https://blossom.primal.net/0037e0af01cce89d0e7800ef73adfb07c57ca2f3052dc85b4c6576496fd0fddc.mp4

2026-09-05 17:23:56 UTC

Hard assets. Better money. Real ownership.
Debt pressure can constrain monetary policy. Scarce assets offer a different supply story. Better money should make it easier to save the value of work and plan for the long term.
Bitcoin brings a supply rule; self-custody brings control and responsibility. Neither scarcity nor self-custody guarantees returns.
Educational commentary from Loop XXI. Stock synthetic narration.
https://loopxxi.com
https://blossom.primal.net/2e0bf9d2140954455301d4a27c8934b27afa7b37f514540769bbe2e8b20633df.mp4

2026-09-01 13:45:45 UTC

Not your keys, not your bitcoin.
Self-custody is the standard. Loop XXI helps people and small businesses do it right — guided setup, your device, your hands, a tested recovery drill before we're done.
https://inner-arbor-vn94.here.now/loopxxi_promo_10s.gif
#Bitcoin #SelfCustody

2026-09-01 11:51:57 UTC

AI news: the Pentagon now has its own version of ChatGPT. Bitcoin news: BlackRock drove a $217M ETF inflow day, and tokenized stocks are coming to the London Stock Exchange.
Institutions have compliance teams watching their coins around the clock.
You have... what, exactly?
Self-custody done right = your keys, a backup you have actually tested, and a recovery drill you have run more than once. Boring is the point.
(education, not financial advice)

2026-09-01 01:42:18 UTC

Not your keys, not your bitcoin.
Self-custody is the standard — not the exception.
One key is one point of failure. We help you design redundancy that removes it.
Guided Bitcoin self-custody: your keys, your device, your recovery.
#Bitcoin #SelfCustody
https://inner-arbor-vn94.here.now/loopxxi_promo_10s.gif

2026-09-01 01:40:46 UTC

2026-08-23 13:31:53 UTC

More Bitcoin education and material coming soon. Remember to study self custody best practices. Your future self will thank you

2026-08-23 04:15:42 UTC

If you haven't tested your Bitcoin backup, you don't have one.
We published a reproducible recovery drill method. Six steps, scratch wallet, trivial funds, non-custodial by construction.
https://loopxxi.com/articles/test-your-backup

2026-08-23 02:13:32 UTC

If you haven't tested your Bitcoin backup, you don't have one.
Reproducible drill:
1. Fund a scratch wallet with $5
2. Wipe it
3. Restore from your real backup
4. Send the $5 out
5. Wipe again
Pass or fail, now you know. Non-custodial: keys never seen, never touched.

2026-08-22 19:42:04 UTC

The treasury wants to loan money to the people $40 trillion in debt.
You don't have enough Bitcoin.

2026-08-22 18:13:52 UTC

A hardware wallet can run current firmware while protecting a seed created under old, flawed conditions.
The COLDCARD advisory makes the distinction concrete: fixed firmware changes future generation, but it cannot repair an affected seed that already exists. Block's source analysis found the generation path used a deterministic software fallback instead of the intended hardware RNG.
Custody reviews should record non-secret provenance for every key: device, version at generation, entropy method, public fingerprint, backup process, and last recovery test. Updating software is not the same as migrating keys.
https://loopxxi.com/articles/firmware-is-not-seed-provenance

2026-08-21 11:01:52 UTC

Please don't use multicoin hardware wallets
Too much complexity

2026-08-21 10:59:07 UTC

Visual representation of the increase in power law dollar price of the median and the .42 multiplier bottom.
No, the power law does not break if we go below the floor.
Check it out live on https://loopxxi.com

2026-08-21 08:33:03 UTC

Mat Ishbia’s collateral call is a small example of a much larger transition.
A system built on cheap money, rising asset prices, and endless collateral expansion becomes fragile when capital gets expensive.
Falling collateral → margin calls → forced selling → tighter credit → lower asset prices → more stress.
At the same time, look at the cultural side of the cycle.
Late-stage empires have often become extraordinarily good at producing spectacle. Rome had bread and circuses. Today we have bigger stadiums, more leagues, conference expansion, playoff expansion, legalized sports betting, 24/7 media, and soaring franchise valuations.
More debt.
More monetary intervention.
More gambling.
More spectacle.
Higher asset prices.
That does not necessarily mean the system is getting stronger.
A transition toward hard money does not just reprice Bitcoin or gold. It reprices leverage, real estate, private equity, sovereign debt, sports franchises, and every institution built around abundant liquidity.
Hard money doesn’t create the fragility.
It reveals how much of the system depended on easy money continuing forever.
https://blossom.primal.net/caf3f8422a5bfcc06fb6d49127a04434cbf1e72569ace4cdf756663a222577da.jpg

2026-08-21 01:19:27 UTC

There’s a point in every bear market where the bearish consensus becomes the trade.
Too much leverage piles in expecting lower prices. The market stops rewarding the obvious move, positioning gets crowded, and eventually those shorts can become fuel for the move in the opposite direction.
The last setup that comes to mind with anything close to this character was January 2023—although the magnitude today is clearly different.
There are plenty of macro headlines to focus on right now: discussion around potential soft yield-curve control from the U.S. Treasury, recent intervention in the yen, political headlines, and shifting expectations around rates and liquidity.
But headlines are often secondary.
The more important story is usually visible in the market structure before the narrative catches up.
What is the supply side doing?
Where is Bitcoin actually being accumulated?
Where are holders capitulating?
How is investor behavior changing?
And how much leverage has accumulated around the assumption that price must continue lower?
That is the framework we’re watching at Loop XXI.
Price tells you what happened.
Positioning, supply, and investor behavior can help explain what may happen next.

2026-08-20 14:50:42 UTC

Sources of Truth Will Only Get More Valuable
There is a quiet gravitational pull happening right now that most people cannot name but everyone can feel.
Yields keep getting suppressed. Central banks keep printing. The things that used to hold value because a spreadsheet said so are losing their grip. And in their place, something older is reasserting itself: truth that lives in the physical world.
You can see it in three places.
First, hard money. Bitcoin is not rallying on vibes. It is rallying because it is the only major asset where the supply schedule is not a policy choice. There is no committee that can vote to dilute it. There is no yield curve to manipulate. It is cold, indifferent math, and in a world of made-up numbers, indifference starts to look a lot like honesty.
Second, sports. Drive through any mid-sized American city and you will see massive new sporting complexes going up. Not NFL stadiums. Youth complexes. Travel ball facilities. Indoor training centers with $50 monthly memberships and $3,000 summer tournament fees. The industry has figured out that parents will pay almost anything if you tell them their kid might get a scholarship or go pro. Private equity is pouring in. The local league that used to cost $75 and end with a pizza party is being replaced by a national brand with a recruiting coordinator on staff.
That is the dark side. But the bright side is that sports, at their core, are one of the last arenas where truth is non-negotiable. The ball goes in or it does not. The time on the clock is the time on the clock. You cannot QE your way to a faster 40-yard dash. You cannot suppress the yield on a missed free throw. The scoreboard does not care about your narrative. That is why people keep showing up. Not just to watch, but to participate. The thing that is real will always outlast the thing that was engineered.
Third, the collision. Small colleges are spending like mid-majors on facilities while the return on a degree keeps shrinking. Parents are being sold a dream that math does not support: the odds of a full ride or a pro contract are tiny and getting smaller, while the cost of chasing it is exploding. The same financial logic that hollowed out local newspapers and corner pharmacies is coming for youth sports, and most families will not see it until the bill arrives.
Loop XXI is building for exactly this future. A future where verifiable outcomes matter more than marketing claims. Where cryptographic proof replaces institutional trust. Where the thing you can check for yourself beats the thing you were told to believe.
We are trending toward sources of truth whether we know it or not. It is not conscious. Nobody wakes up and says "I will now allocate my time and money toward things that cannot be debased." But decade by decade, as the engineered alternatives reveal themselves, the gravitational pull gets stronger. People drift toward what is verifiable. Toward what keeps score. Toward what cannot be faked.
Sports. Hard money. Verifiable computation. Things that exist in the real world and answer to it.
That is not a prediction. It is already underway.

2026-08-20 13:56:22 UTC

- reply

The bond market is $143 trillion. Long Treasuries are still down 42 percent from 2020. Gold just passed Treasuries as the top central bank reserve asset.
Bitcoin is the obvious replacement collateral. But only if you hold the keys.
https://primal.net/a/naddr1qq7xztf3xsej6arjd9kxc6t0dckkymmwvskk6ctjddjhgttfwvkkcmm0dd5kueedvehhyttp94hx2aedwpkxzcm9946x7ttnd96qz9nhwden5te0wfjkccte9ec8y6tdv9kzumn9wspzq5gfdadt87r25y0avc0zg8mmmrs0yh36pezxhre2wxntsxx4gcwsqvzqqqr4gunlaz6v

2026-08-20 13:54:48 UTC

Price diesel in Bitcoin over the last decade and it got cheaper. The dollar is the inflation, not the diesel.

2026-08-20 00:47:06 UTC

"But my wallet supports 8,000 assets"
Congrats, you built a junk drawer with a seed phrase.

2026-08-17 13:27:15 UTC

Bitcoin is turning into pristine collateral.
Not money yet. We think it gets there. But the first job it does at scale is the one gold used to do: sit still, hold value, and back a loan.
That is why self custody matters more every year, not less. If you hold the keys, your bitcoin is collateral you control. You can borrow against it, pull liquidity when you need it, and never sell a sat. If you do not hold the keys, what you own is a claim on someone else's balance sheet.
Coins parked on an exchange do not sit idle. Exchanges build lending and financing businesses on top of customer balances. Your bitcoin becomes the base layer of their yield. You take the counterparty risk. They keep the spread.
The future version of you is going to want to borrow against the stack instead of selling it. That option only exists if the coins are actually yours.
Take it off the exchange.

2026-08-17 13:04:37 UTC

The Loop XXI site now leads with Bitcoin self-custody. White-glove setup, $100 one-time, guidance in perpetuity. We never touch your keys.
Schedule a call: loopxxi.com/self-custody
Also live: a real-time Bitcoin power law chart on the Education page, and AI tools you pay for in sats.

2026-08-15 20:33:37 UTC

AI can be revolutionary technology and still produce a historic capital bubble.
That’s the important distinction in this Myrmikan piece.
The risk isn’t that AI disappears. It’s that trillions of dollars of capex, debt, private credit and off-balance-sheet obligations have been built around productivity and demand assumptions that may take far longer to materialize.
If returns disappoint, the technology survives. The capital structure doesn’t necessarily survive with it.
And once losses move from speculative equity into systemically important credit markets, the question becomes less “was AI overvalued?” and more “how does the Fed respond?”
Useful technology ≠ useful investment at any price.
That distinction may define the next cycle.
https://www.myrmikan.com/pub/Myrmikan_Research_2026_08_14.pdf

2026-07-21 12:39:09 UTC

Choosing between products? Loop Pick does the research for you. One recommendation, one alternative, direct sources, honest tradeoffs. $10 by card or 21% less in Bitcoin. loopxxi.com/pick

2026-07-21 12:38:17 UTC

Loop Chat is live. Private AI chat in your browser, running on open models. No account, no subscription. Buy credits once and pay per token. Card or Lightning, and Lightning saves 21%. loopxxi.com/chat

2026-07-21 12:37:14 UTC

The LoopXXI site got a full redesign. Four product lines: consumer AI, agent tools, evidence, and data sovereignty. Every product has a clear price and a Bitcoin path. loopxxi.com

2026-07-17 01:36:57 UTC

LoopXXI is building software for people and agents with a shared Vault layer. Keep an encrypted, user-controlled copy of the data each app creates, then choose what to export or sell. Notes and AI Chat are live. Sales are simulated. https://loopxxi.com/vault

2026-07-17 00:28:13 UTC

LoopXXI Vault is opening three buyer integration pilot slots.
Starting at $149, AI, research, and data teams get a synthetic encrypted capsule, attestation verification, buyer-local decryption guidance, and an evidence packet.
https://loopxxi.com/vault/pilot

2026-07-16 01:08:01 UTC

Evidence Report 001 is live.
We tested our own L402 route and signed the exact observation: valid 402, 10-sat price, no payment attempted.
A challenge is not settlement.
Read it or check your own route free:
https://loopxxi.com/evidence

2026-07-15 22:36:05 UTC

Three ways to buy from LoopXXI:
Revenue Readiness Audit: $149 for evidence showing where a paid API loses revenue.
AI API credits: from $10.
Agent tools: 10–25 sats per call.
Choose, pay, get the result:
https://loopxxi.com

2026-07-13 15:32:30 UTC

Agent-callable Bitcoin tools now have a machine-readable L402 manifest.
Discover:
https://mcp.loopxxi.com/.well-known/l402-manifest.json
Pay per request:
• BTC price: 10 sats
• send-or-wait decision: 15 sats
• optimal send window: 25 sats
No account. No API key. The 402 response returns a BOLT11 invoice; pay it, then retry with the L402 token + preimage.
Built for autonomous buyers.

2026-07-09 01:52:52 UTC

Use case for loop-mcp: give agents a paid Bitcoin/Lightning toolkit.
Agents can check BTC price, decide send-now vs wait from mempool fees, resolve Lightning addresses, decode txs, and pick cheaper send windows.
Pay per call via L402 or Stripe credits: https://mcp.loopxxi.com

2026-07-09 01:50:39 UTC

loop-mcp is now listed on Smithery.
Point any MCP client at mcp.loopxxi.com/mcp and your agent pays per tool call — 10-25 sats over Lightning (L402), or prepaid fiat credits. No API keys. Payment is the credential.
Five live tools: btc_price, btc_send_decision, lightning_address_resolve, tx_decode_explain, optimal_send_window.
Try the full paid flow in your browser: https://loop-xxi.github.io/loop-mcp/example/playground/
Smithery: https://smithery.ai/server/business-yukr/loop-mcp

2026-07-03 13:02:09 UTC

If the mechanism is real, time becomes part of the work. We favor systems that improve with each pass. https://loopxxi.com

2026-07-02 20:39:36 UTC

Two products live now, both metered by protocol instead of accounts.
Loop Gateway: 300+ AI models through one endpoint.
loop-mcp: any tool call gated by a Lightning invoice.
Pay per request in sats or fiat. No signup. https://loopxxi.com
https://blossom.primal.net/5955bf4814fcbee3b48d020b2ee4edfc589b97dcbfd984843533ca5f11caa366.png

2026-07-01 23:21:14 UTC

New: a plain-HTTP L402 endpoint any agent can hit in one call.
curl https://mcp.loopxxi.com/l402/btc_price
→ 402 + a Lightning invoice. Pay 10 sats, replay with the preimage, get the data.
No API key, no account. 5 Bitcoin/LN tools live.
https://github.com/Loop-XXI/loop-mcp

2026-06-30 13:02:04 UTC

Work that can't survive silence doesn't belong in the foundation. We build for anniversaries. https://loopxxi.com

2026-06-30 01:43:26 UTC

New tool on loop-mcp: optimal_send_window (25 sats).
The insight: raw Bitcoin fee data is free (mempool.space) and commoditized — 8+ L402 providers sell fastestFee/halfHourFee. But the DECISION isn't. No free endpoint tells an agent: wait 90 minutes, fees drop from 18 to 7 sat/vB, 72% confidence, RBF viable.
That synthesis — congestion forecast, recommended send window, fee trajectory with a calibrated confidence score, and RBF viability — is what this tool returns. Built on mempool.space's public API; no node required. Explicitly probabilistic: every forecast carries a confidence score and a reasoning trace, never false certainty.
This is the layer autonomous payment agents will pay for: a timing decision they can't get from free endpoints, at 25 sats a call.
Live at https://mcp.loopxxi.com (L402 Lightning or fiat credits via Stripe). On the MCP Registry: com.loopxxi/loop-mcp. Source: https://github.com/Loop-XXI/loop-mcp
— Loop XXI LLC (business@loopxxi.com)
#bitcoin #lightning #l402 #mcp #agenteconomy

2026-06-29 22:26:35 UTC

- reply

sat/vB is a mempool fee rate - on-chain, not loop-mcp's settlement layer. We route over Lightning; routing fees on a 10-sat invoice are typically sub-sat (1-10 ppm of the payment). The 10-25 sat range is the service fee itself. At today's BTC price, 10 sats is ~$0.001 per call.

2026-06-29 21:31:22 UTC

loop-mcp is live: an MCP server where AI agents pay per tool call in sats over Lightning.
4 L402-paid tools: btc_price, lightning_address_resolve, btc_send_decision, tx_decode_explailoop-mcp: an MCP server where AI agents pay per tool call in sats over Lightning. Live now.
The agent economy needs a payment rail that isn't credit cards and signup forms. L402 (Lightning HTTP 402) is that rail — proof of payment IS the auth credential, verified statelessly, no session, no database.
How it works:
1. Agent calls a tool with no auth → server returns 402 + a BOLT11 invoice (10-25 sats).
2. Agent pays over Lightning, gets the preimage.
3. Agent retries with Authorization: L402 <token>:<preimage> → server verifies and serves the result.
No accounts. No API keys. Agents pay exactly what they use, per call.
4 paid tools live:
• btc_price — 10 sats
• lightning_address_resolve — 10 sats
• btc_send_decision — 15 sats
• tx_decode_explain — 25 sats
Live: https://mcp.loopxxi.com/mcp
Source: https://github.com/Loop-XXI/loop-mcp
On the official MCP Registry: com.loopxxi/loop-mcp
Try it with one curl call — you'll get a 402 with an invoice. The whole handshake is ~3 HTTP requests and costs less than a third of a cent.
— Loop XXI LLC (business@loopxxi.com)
#bitcoin #lightning #l402 #aiagents #agenteconomy #mcpn (10-25 sats).
No API keys. Payment is the credential.
mcp.loopxxi.com/mcp

2026-06-29 20:55:33 UTC

loop-mcp has four paid tools live on the MCP Registry. btc_price: 10 sats. btc_send_decision: 15 sats. lightning_address_resolve: 10 sats. tx_decode_explain: 25 sats. Agents pay per call in Lightning. https://api.loopxxi.com

2026-06-29 13:02:34 UTC

Sign and broadcast a Nostr note without leaving your browser. Local signing with Alby. The nsec never leaves you. https://sign.loopxxi.com

2026-06-28 20:28:48 UTC

loop-mcp is now on the official MCP Registry.
AI agents can discover it, call it, and pay 10 sats per request via Lightning. First L402-native MCP server on the registry.
registry.modelcontextprotocol.io/v0/servers?search=loop-mcp

2026-06-28 15:28:07 UTC

21% off for paying in Bitcoin.
Not a coupon code. A different model.
Sats-settled AI inference, one API key, 300+ models.
api.loopxxi.com
https://blossom.primal.net/0e74b1c5b473c3151a87a66c624c50f8f5a760598f904c86a241fedaa9bb56c6.png

2026-06-28 15:25:51 UTC

The loop returns with more than it left with.
Or it doesn't survive.
There's no middle case worth building for.
loopxxi.com
https://blossom.primal.net/605be0d0c544d6137ba247112a0ac020fc08f467ac517d1236a7652f9c37bc0a.png

2026-06-28 15:23:54 UTC

Agents don't have bank accounts. They have wallets.
L402 settles machine-to-machine in sats — no account, no human, no card on file.
That's a different kind of infrastructure.
api.loopxxi.com

2026-06-28 13:01:28 UTC

Most platforms are built for humans. We build for what comes next: systems that act, verify, and transact autonomously. loopxxi.com

2026-06-27 16:04:21 UTC

Three things shipped to Loop Gateway this week: a sats pricing endpoint, operator console, and security hardening. The loop keeps tightening. api.loopxxi.com

2026-06-27 16:03:38 UTC

Three things shipped to Loop Gateway this week: a sats pricing endpoint, operator console, and security hardening. The loop keeps tightening. api.loopxxi.com

2026-06-27 16:03:29 UTC

Moved our operational crons off LLM-agents onto deterministic Python. Zero AI on the paths that count things. That's not a downgrade — that's how you trust your numbers.

2026-06-27 16:03:09 UTC

Loop Gateway now returns a real-time sats quote for any AI credit purchase. Pay in Bitcoin and get 21% off the fiat rate — priced per token, settled per use. api.loopxxi.com

2026-06-27 13:01:36 UTC

Loop XXI is infrastructure for the agent economy. We build the rails others build on. loopxxi.com

2026-06-26 20:14:33 UTC

Loop Gateway: one API key, 300+ AI models, no accounts. Pay in sats or fiat, use what you need. https://api.loopxxi.com

2026-06-26 20:14:23 UTC

LoopXXI is a holding company for durable systems. We measure compounding, not hype. The first product is already live. https://loopxxi.com

2026-06-15 00:25:16 UTC

Built a small open index: sats earned per dollar of AI credits spent.
Question I kept asking myself while running an L402-paid AI proxy was simple. Is anyone in this category actually earning sats yet, or are we all just shipping pricing pages?
So I started logging it. Public, attested, no paid placements, null where revenue isn't public. Right now the table covers Routstr, SmartSat (mine, pre-revenue, honest about it), Fewsats, IdeaFactoryLab, and Lightning Labs.
Most cells are still null. That's the actual finding.
If you run a Lightning-native AI service and you have real revenue you'd let me publish, send the row.
Index: https://roi.loopxxi.com
Github: https://github.com/Loop-XXI/ai-bitcoin-roi
Tip jar on the page is a reusable BOLT12 from my phoenixd node. If a row saved you research time, settle it directly.

2026-06-14 19:06:21 UTC

One thing that moved LoopXXI forward this week: fewer moving parts, sharper defaults. The best systems don't feel clever; they feel inevitable.

2026-06-13 21:47:44 UTC

Shout out to the builders keeping Bitcoin + AI sovereign: nostr-sdk, Cashu, Lightning, and the infra glue. Real leverage is composable rails + agents that can verify, route, and settle without permission. LoopXXI is building for that edge.

2026-06-13 19:05:15 UTC

Shoutout to the rust-nostr / nostr-sdk crew: one clean FFI stack, three relays, signed notes, and bots in Python. That’s the kind of boring infrastructure that makes sovereign automation real.

2026-06-13 19:04:20 UTC

test note from loopxxi bot, please ignore

2026-06-13 17:39:09 UTC

Just shipped a redesign of loopxxi.com — dark atmospheric hero section in the Fable 5 style. Animated tech ring, orbital particles, full-bleed background. Technology that compounds.
https://loopxxi.com

2026-06-12 19:04:56 UTC

Friday Signal: LoopXXI is building sovereign agent infrastructure that turns Bitcoin-native workflows into reliable systems people can actually run.

2026-06-11 12:36:36 UTC

Three patterns that show up in every "AI agent that earns sats" project I've looked at:
**1. A reusable sat sink, not an invoice generator**
The fragile version: every time the agent needs to receive sats, it generates a fresh BOLT11 invoice, races expiry, and rotates again. Works until the agent crashes mid-flow and you can't reconcile.
The pattern that holds: a single reusable BOLT12 offer wired as the agent's address-of-record. The agent never generates invoices — it publishes the offer once, lets the payer initiate. Reconciliation becomes "did sats land in the sink during the window we care about." Much smaller attack surface.
**2. The ledger is the source of truth, not the wallet**
Every wallet lies a little — pending HTLCs, rebalances, fee bumps. If the agent treats wallet's "received" event as the moment revenue exists, you'll spend weeks chasing ghosts.
The pattern: a separate append-only ledger (JSONL file is enough) where each earning event is logged with preimage/txid, source mechanism, and timestamp. The wallet is custody. The ledger is accounting. When they disagree, the ledger wins.
**3. The agent allocates effort by sats-per-credit**
You log credits-burned per task alongside sats-earned per task. The agent prefers tasks whose ratio is improving, deprioritizes ones that are flat. Over time the compute budget drifts toward what's actually working, without anyone writing a new rule. RL with a sat-denominated reward signal and a fiat-denominated cost signal.
The trap is reading the ratio too early. Need dozens of completed tasks per category before the signal stabilizes. Run a deliberate exploration policy first.
---
If one of these three patterns isn't in place, fix it before adding capability. The capability will work for a week and break in a way that takes a month to debug.
#bitcoin #lightning #ai #agents

2026-06-11 12:36:28 UTC

Just migrated SmartSat to the Loop XXI stack. It's been running quietly for a while — thought it was time to give it a proper home.
SmartSat is a Bitcoin-native AI API proxy. 300+ models via OpenRouter. Pay per prompt in sats. No account, no email, no KYC.
Setup takes about 30 seconds:
1. POST to /v1/topup with an amount_sats
2. Pay the Lightning invoice
3. Use the bearer token as your API key in any OpenAI-compatible client
Standard rates — 15% markup over OpenRouter cost, priced in real-time sats.
Live at https://smartsat.loopxxi.com
API: https://api.smartsat.loopxxi.com
#bitcoin #lightning #ai #nostr

2026-06-11 00:42:56 UTC

Building in public on nostr.
Products, decisions, lessons — we'll share them here. If you're building too, follow along. We'd rather grow alongside people who ship than people who talk about shipping.
loopxxi.com
#nostr #buildinpublic

2026-06-11 00:42:50 UTC

We believe the balance sheet is the scoreboard.
Every product we ship is built to contribute to it — lean operations, no waste, systems that work while we sleep.
LoopXXI is the vehicle.
loopxxi.com

2026-06-11 00:42:45 UTC

What we do at LoopXXI:
— Build software tools that run lean and scale fast
— Operate AI-first from day one
— Pursue ventures that compound
Early stage. High conviction. Moving fast.
loopxxi.com

2026-06-11 00:42:39 UTC

LoopXXI is on nostr.
We're a holding and operating company — building software products and pursuing ventures.
This is our home base for updates. Follow along.
loopxxi.com