1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33207706585bd0c526ac8ecfc3c5a0ecc716f408675c436a72eb62f22fe583fd. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68fa9174-55c1-4739-9558-888bc7f70651.json and https://artists.proofprofile.net/proofs/artist/68fa9174-55c1-4739-9558-888bc7f70651.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Matteo Setti canta le canzoni di Vito Taburno
Matteo Setti canta le canzoni di Vito Taburno, Vol. 2
It's the Most Wonderful Time of the Year