(; ) is a word used 74 times in the Hebrew Bible. Its etymology and precise meaning are unknown, though various interpretations have been proposed. It is probably either a liturgical-musical mark or
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 0x3143bc9d434b1eaea7ec169317e12f54120c00089531b53bfe98ebb47649cf98. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a98c7a06-3f42-4596-9db0-4ea6928b6314.json and https://artists.proofprofile.net/proofs/artist/a98c7a06-3f42-4596-9db0-4ea6928b6314.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).