The Bitcoin core developers use Blockstream Jade.
The people who wrote the protocol you trust with your savings chose Jade to hold their own keys.
After the Coldcard disaster, a LOT of them are quietly telling people the same thing: open source or nothing.
Ledger stores seeds in their database. Coldcard just proved that rewriting code without oversight breaks entropy. Jade is open source end to end - hardware, firmware, bootloader - and air-gapped.
Over 100K sold. Zero hacked.
Do not bet your stack against the people who built Bitcoin.
Coupon LOVEISBITCOIN.
Link: loveisbitcoin.com/blockstream
Love is Bitcoin 💜⚡
npub1kw…qf3xx
2026-08-12 04:25:48 UTC
Author Public Key
npub1kwcatqynqmry9d78a8cpe7d882wu3vmrgcmhvdsayhwqjf7mp25qpqf3xxPublished at
2026-08-12 04:25:48 UTCEvent JSON
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"pubkey": "b3b1d5809306c642b7c7e9f01cf9a73a9dc8b363463776361d25dc0927db0aa8",
"created_at": 1786508748,
"kind": 1,
"tags": [
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"content": "The Bitcoin core developers use Blockstream Jade.\n\nThe people who wrote the protocol you trust with your savings chose Jade to hold their own keys.\n\nAfter the Coldcard disaster, a LOT of them are quietly telling people the same thing: open source or nothing.\n\nLedger stores seeds in their database. Coldcard just proved that rewriting code without oversight breaks entropy. Jade is open source end to end - hardware, firmware, bootloader - and air-gapped.\n\nOver 100K sold. Zero hacked.\n\nDo not bet your stack against the people who built Bitcoin.\n\nCoupon LOVEISBITCOIN.\nLink: loveisbitcoin.com/blockstream",
"sig": "a060516c8dcc960bf568c84a6aa7f4ae948cee26cd60da32a4c70d01bdda6680bd24a2ed6cd888e6ba9e3ca25652ae87868c7772d97a571edbc97dbb15f1da31"
}