1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3169efdc3eb9625191b6d9a3e27b9a283a979a7be88a24525dd48fa76cb0a13. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fcceddba-0719-4864-b885-444d701316c6.json and https://artists.proofprofile.net/proofs/artist/fcceddba-0719-4864-b885-444d701316c6.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Ottobre (feat. Tommaso Cerasuolo Perturbazione)
Più della tua ombra. Immagini sonore dal podcast "Ho desiderato la felicità. Ho cercato tutto"