thumb|Mocedades (2006) Mocedades () is a Spanish singing group from the Basque Country, who represented Spain in the Eurovision Song Contest in 1973 with the hit song "Eres tú". Since June 2014, Moce
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 0xfac8821f1a82ad62f91b1f0b144cdf0164e433484c517ed1dbecf97dfc322d6f. 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/5a23aa7b-9de0-4eec-bfa6-a5213a8ce036.json and https://artists.proofprofile.net/proofs/artist/5a23aa7b-9de0-4eec-bfa6-a5213a8ce036.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).