🕰 New public server available! 🕰
This is an OTS client that lets you easily Open Time Stamp any Nostr event. The usage is straightforward: two tools, 'ots_event' to create an attestation for an event, and 'verify_ots', which lets you verify the OTS attestation and its state in the time chain.
With this server, you or your agents can easily OTS any Nostr event. Here’s a brief demo:
The project’s code is open source, and you can run your own instance if you wish. By default it uses public Bitcoin nodes to verify the attestations, so you don’t need to run your own node.
https://github.com/ContextVM-org/ots-cvm
Server page: https://www.contextvm.org/s/e1c1c32729cbd542c9b9ce7ee6e421c434e07835228020c4f57140782f02496a
You can use this service for free, but public OTS servers need to cover operating costs. If you’d like to donate, please refer to opentimestamps.org.
ContextVM
npub1dv…33jdm
2026-03-18 14:58:30 UTC
Author Public Key
npub1dvmcpmefwtnn6dctsj3728n64xhrf06p9yude77echmrkgs5zmyqw33jdmPublished at
2026-03-18 14:58:30 UTCEvent JSON
{
"id": "5c4d53e3e9975d50bda01829626c45adb6c8a51aac8595c9173642904b886f6c",
"pubkey": "6b3780ef2972e73d370b84a3e51e7aa9ae34bf412938dcfbd9c5f63b221416c8",
"created_at": 1773845910,
"kind": 1,
"tags": [],
"content": "🕰 New public server available! 🕰\nThis is an OTS client that lets you easily Open Time Stamp any Nostr event. The usage is straightforward: two tools, 'ots_event' to create an attestation for an event, and 'verify_ots', which lets you verify the OTS attestation and its state in the time chain.\n\nWith this server, you or your agents can easily OTS any Nostr event. Here’s a brief demo:\n\nhttps://video.nostr.build/74e0a7eaebda78e3ae27c48b53adfbdac71efa2da606fcb665fa496460aa8cfb.webm\n\nThe project’s code is open source, and you can run your own instance if you wish. By default it uses public Bitcoin nodes to verify the attestations, so you don’t need to run your own node.\n\nhttps://github.com/ContextVM-org/ots-cvm\nServer page: https://www.contextvm.org/s/e1c1c32729cbd542c9b9ce7ee6e421c434e07835228020c4f57140782f02496a\n\nYou can use this service for free, but public OTS servers need to cover operating costs. If you’d like to donate, please refer to opentimestamps.org.",
"sig": "7d6a7b7c677207ddf361c5881a862763120bcbefc69f88fdad8f2ef9315471a2e3f7bea755ee5ecf52c64574863eee0e29cabfd0348d5fed64e05f05a71a04b9"
}