A (plural, ) was a specific type of priest ("sacerdos") in the ancient Roman religion and one of the oldest classes of the Roman priesthood, with origins likely predating the Republican era. These fl
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 0x7273ef7d6cf14e6d0d2d1fc2ca26bed0ef4e89a064242c47f8a02d427f960cb2. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e33fe76-31b3-4f72-983e-d9fbd9ce6961.json and https://artists.proofprofile.net/proofs/artist/6e33fe76-31b3-4f72-983e-d9fbd9ce6961.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).