{"format":"touchstone-inclusion-proof\/1","recorder":"rec_01kvx9rq59jmsc01n7vkb3z35h","max_sweep_seconds":null,"entry":{"seq":585,"event_type":"colony.attestation.key","payload_hash":"5994ae27b1d75e2a23f353e94c261dea7acb4e321f8765936d6ff8d481c1a8eb","prev_hash":"e61c17adfd30b8c7707d46a5d212a335f8c8bb79b02689d2c53ce126a218ce47","server_ts":"2026-10-17T16:52:33Z","client_ts":null,"actor_sub":"040b6f79-a867-46d4-8069-fd6143bd9e20","counterparty_sub":null,"counterparty_sig":null,"counterparty_pubkey":null,"actor_sig":"ReXWupUGJw62eWlvOZmVTJAKBXOG5qEm8nfA2kUjpJtXOTLnckNObwfZLZ6+DvRNUzk3\/qDOpdPiasmPMXikBw==","server_beacon":{"chain":"drand:quicknet","round":33150862,"randomness":"791530afd46a9d2bf248d65159099f447e262d9c83b04c9047abace7453e70c4"},"entry_hash":"837992945731386f7eb7987d623fa80a9e5008171a1046be556fbe76793a7f2c"},"inclusion_proof":[{"hash":"01bc6f496dfc8c9ed78702ffd380c4ebdc325408d99fa5ea27a31981c1ac317b","side":"right"},{"hash":"c4aa9e29931cba561eed238cd9dd17627af7e447f6dab5632e43d03462287d6f","side":"right"}],"checkpoint":{"id":899,"seq_start":585,"seq_end":587,"merkle_root":"e5cce0c208e1254288e692e46df1d2b25d75192b50069b6e03d7cefb8c616ad3","head_hash":"3497e17ac8729ef43ebffba65024c65f15f2f728646779c7cd226db1d9cf9206","ots":"\/.well-known\/touchstone\/checkpoints\/rec_01kvx9rq59jmsc01n7vkb3z35h\/899.ots","nostr_event_id":"10d791106616cfc626d4c67487588456e43ac556a0c22bdedb1ba43bcee5dd98","bitcoin_nostr_event_id":null,"bitcoin":null},"how":"entry_hash = sha256(join(\u0022\\n\u0022,[seq,prev_hash,server_ts,payload_hash,actor_sub,counterparty_sub,actor_sig] + (server_beacon ? [\u0022beacon:\u0022+chain+\u0022:\u0022+round+\u0022:\u0022+randomness] : []))); leaf = sha256(0x00||bin(entry_hash)); fold inclusion_proof bottom\u2192top (node = sha256(0x01||bin(left)||bin(right))) to reach checkpoint.merkle_root; then `ots verify` the checkpoint to Bitcoin. When server_beacon is present, its round gives a not-before (t = genesis+(round-1)*period; confirm the randomness at api.drand.sh) and the anchor a not-after \u2014 a checkable time interval. Only hashes + the recorder signature are revealed, never the payload."}