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 0x5271505a78d89ba8868120fcddb5b135242c135e8e6f6faf836518d08644d284. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aab330df-aff5-4bdf-9f07-ec5215d68ad9.json and https://artists.proofprofile.net/proofs/artist/aab330df-aff5-4bdf-9f07-ec5215d68ad9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Que Tal Se Mueve / Baila Lulu / Espejeando (Mix)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf161b8b6faae7bd57ae043db5ab2a61df8c34909d5aff441835f92215eb59a03. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:43:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTPX2469961.
La Pollera Colorá / La Telaraña / Jalaito (Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8bdb65b868eb08436b4788335269e9f7402bcedea3d71ae6b1258dde761fef. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTPX2469966.
La Trigueñita / Por una Negrita / El Solterito (Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6090421965d8b33b0d6db42b3cfe825f30369d310e7118f78218a1a431ebf8bb. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTPX2469974.