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 0x13c1e58775a2cc7217957b4166adf21e85bb7fb8ef9d95208d39aee185a2d89f. 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/5fb7afd4-0146-42d1-9514-c73c45f85b08.json and https://artists.proofprofile.net/proofs/artist/5fb7afd4-0146-42d1-9514-c73c45f85b08.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Best vol. 1 (Highlanders Music from Poland)
The Best vol. 2 (Highlanders Music from Poland)