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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed06c0a65c5e3833b0d064c55ce5177011cb31230f3a5c2eb20c596f85b0360. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e821399a-0eb9-4e1a-a473-1147b92d8847.json and https://artists.proofprofile.net/proofs/artist/e821399a-0eb9-4e1a-a473-1147b92d8847.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Song 2 (aus The Voice Kids, Staffel 13) [Live]