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 0x785b18fbb79eadc351133495f10099babebf8df15cf769726b13d7a1befaf332. 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/a9c3b954-8d1e-4afc-834b-4232c6cad5a5.json and https://artists.proofprofile.net/proofs/artist/a9c3b954-8d1e-4afc-834b-4232c6cad5a5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Popurri Chicoteado: El Sinaloense / El Pavido Navido / El Indito
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 0x3f81d183cc53dabe7819b8e1394bf14c34f786107647c9fd78a6e79bb020bec1. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:01:34Z), 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/QZDQH2442317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5e424c4ffa891cc73352206e1892cf59f72dbe93e19aaa54eceb1ffcabd197. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:30:24Z), 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/QZDQH2529525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c0741e917f712a7856cb3f3a829f50f5266b52b3dbfcbde588a641c0c1dd59. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZDQH2529526.