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 0xeb5ed1d349400468aa77b8d83b469e231af5d5d3dc631d8137b49c03aa0d18a5. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4992f523-9cbb-4d42-8a60-cc090f02164b.json and https://artists.proofprofile.net/proofs/artist/4992f523-9cbb-4d42-8a60-cc090f02164b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
embracing loved ones in silence have they wept until initial shock has lost its grip and denial anger pain in screams have charged surrounding air they casted blame upon one other not being able to bear the guilt themselves