{"format":"touchstone-checkpoint-feed\/1","recorder":"rec_ed8e540a54dd07db","subject_sub":"standing-demo-issuer","signing_pubkey":"1a\/x6bn3JW6THku6XIPXYYYNY4ajfG7+vrbjwQxPgqY=","server_pubkey":"V4NJxeWjO0VBPibwj4RFRWxsH+b8LWLH+TLdENZIcPE=","nostr":{"pubkey":"c4668fc02e42fd21a4ce242b48fb9b2e6bb2c62b7a3423b90e0765f93c31d7eb","relays":["wss:\/\/relay.damus.io","wss:\/\/nos.lol","wss:\/\/relay.primal.net","wss:\/\/relay.snort.social"],"kind":1623,"tag":"touchstone-checkpoint","bitcoin_anchor_tag":"touchstone-bitcoin-anchor","note":"Each checkpoint head is published as a non-replaceable event; fetch by id (or by author+kind) from any relay and compare with what touchstone.cv serves. A fork would leave a contradicting event the relays still hold. When a checkpoint confirms to Bitcoin, a second event (tag touchstone-bitcoin-anchor) carries its block height + full .ots proof, so a fork can be resolved by Bitcoin ordering even if the server hides a head."},"checkpoints":[{"id":42,"seq_start":0,"seq_end":2,"merkle_root":"aa6f5813b24930eec13b6ce7c9225debcd9a3df017123dd41fd61b03496119d1","head_hash":"0a8dd7ae3743580bc97698c43b0ed352a3e380c70e09b897f733f6e094ba51c3","prev_checkpoint_hash":null,"recorder_sig":"4gkaUAdzI\/slFvktCwHKpYYLAdKEVayYliRcSvfJKdK3\/CgjAbzPU\/g3Ia2xlOaJQ5+5LwoqSNbM3q3sdojZCA==","created_at":"2026-07-09T15:40:44Z","nostr_event_id":"4bfd96c2159643f52c0ec1c81e335273d4c5e929a91804d21dbed20912ef895a","bitcoin_nostr_event_id":null,"proof_ots":"\/.well-known\/touchstone\/checkpoints\/rec_ed8e540a54dd07db\/42.ots","anchors":[{"method":"self","token_blob":"SVSjG0d+Fqq0mq3PozsXbpCIGfwir5Q7IR\/+JsHj62zVU5lzRQfTJ9hW4yus10H63IZd8PpvN4uiKiPpGydlDA==","external_ts":"2026-07-09T15:40:44Z","status":"confirmed"},{"method":"ots","token_blob":"{\u0022calendar\u0022:\u0022https:\/\/a.pool.opentimestamps.org\u0022,\u0022digest\u0022:\u00220a8dd7ae3743580bc97698c43b0ed352a3e380c70e09b897f733f6e094ba51c3\u0022,\u0022receipt_b64\u0022:\u00228AjRwZl12MUwLgjxIM9YUmRxCI6Jc8L4IfCD5GlPKGg0Bxg0jtfeEFPLF2mUCPAQC+d6Gc6l2+VSHKUZB8XxOAjxIC3Q0fsQttJ7+yJSQE49pt9z2u16MbXqx+i\/xf48Nz9FCPAgMbGJEz4IexT4d00L1PWUnaP5vZ8Y71IzBKb5tGk3aO8I8QRqT8D98Aj83iYPwiftEwCD3+MNLvkMji4taHR0cHM6Ly9hbGljZS5idGMuY2FsZW5kYXIub3BlbnRpbWVzdGFtcHMub3Jn\u0022,\u0022submitted_at\u0022:\u00222026-07-09T15:40:45+00:00\u0022}","external_ts":"2026-07-09T15:40:45Z","status":"pending"},{"method":"tsa","token_blob":"{\u0022tsa\u0022:\u0022https:\/\/freetsa.org\/tsr\u0022,\u0022digest\u0022:\u00220a8dd7ae3743580bc97698c43b0ed352a3e380c70e09b897f733f6e094ba51c3\u0022,\u0022response_b64\u0022:\u0022MIISFjADAgEAMIISDQYJKoZIhvcNAQcCoIIR\/jCCEfoCAQMxDzANBglghkgBZQMEAgMFADCCAYYGCyqGSIb3DQEJEAEEoIIBdQSCAXEwggFtAgEBBgQqAwQBMDEwDQYJYIZIAWUDBAIBBQAEIAqN1643Q1gLyXaYxDsO01Kj44DHDgm4l\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\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\/YfnfMr0ziZnesBUOrDNRrNNgt3IgMNDwNhwl6oKWHVIhlYnM\/5boljfbpZTAbqvxHI3ztT0\/swxQOqTat5qBJRAY\/VH1n\/T4M9uDjSuu3qfh0ZH5PL9ENqoVW44i5NT\/znQev2MGXOAHwz9kZwwzz9MFX6hbGhBqWa+nlAqb7Y72KFzj33m1OVHxV2Wl4YD9f91bZTFpUEGW4Ktbkmxpf\/iGIPaf4WHpoBW\/O6EzofMKYlz4yXyEBh0wRRVyXltLrj+MFHqhe+PsMBllq\/dCaO4W\/F+AuHElu7aUYWMASelphWAJiUsNMr5HAoeCSSgilqf1CSoWC+k6e4334Fym+Iy4csMex+PG4rSdqXJVQ+AWEdRajSPKh7yDfpNkdnO6yqQJ\/tSd11XQ5cL0M9jWuCD1zHlgA+u+R2cry3yo23jD7qTGLhZqUvXCyWigH30\/Q\/RXjjDwrc4DJiQ+gRY0FhdTYqlvgMBPr4LcJKnNksivdj+kbz7bVSbrBAzRiazK9l841\/5XMtP9BvD0hKCpQFvP9PSgCC8EQnKqgSe26FSJBaAQcA5TnK8NF4jkbElBxf\/zyh7P3IjHso35jtgUWD1\/itg9BJWbYUwJ4tfILpB2F0wbk1GcZDCDZoyW3Xf3trApz\/Zd93gF3joc9Hh9RFveKRzWQ7ddUt3egTCCB\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ts -verify -digest \u003CheadHash\u003E -in \u003Ctoken.tsr\u003E -CAfile \u003Ctsa-ca.pem\u003E\u0022}","external_ts":"2026-07-09T15:40:46Z","status":"confirmed"}],"witnesses":[]}]}