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 0x546d3d55411904dc878ef723e8730bac32ac8e421c9883d36e2ea0226101be79. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a804ee65-b667-46b3-8b4e-238efaf968e7.json and https://artists.proofprofile.net/proofs/artist/a804ee65-b667-46b3-8b4e-238efaf968e7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tri Boje Zvuka (Live at RTS Studio 8, 2015)
Tri boje zvuka (Live at RTS Studio 8, 2017)