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 0x26f11a6fae54d40a7f038f2ea3f45a580d94ab5483bbfe6a3f7bce4136183be8. 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/6c0b9f0d-b190-445c-ad1b-fef5c86e867e.json and https://artists.proofprofile.net/proofs/artist/6c0b9f0d-b190-445c-ad1b-fef5c86e867e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x0ce42e4b44971067824125f4cb6af28e09aaaaaa2935369f2f681fda2ff0709a. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/ES5151402667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4f4bb47f1beaa79ccda6f953ad2cea9a7d420341fde7aed5b3bbacca2693c5. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ES5151402453.
¿Dónde están tus ojos negros? - 2015 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0a46edfcef5274fd1f4b391ccd40e82b54427352572b15a8a5b7c26d357497. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/ES5151402470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576014be36a5f934386f8992b31fde8c6805b7950d6fdf9d153a800516dfa055. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES5299500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f08119db3ec9a4183a553e68b6879f66d940cbe89735218a748b5f52b3f41ab. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES5299500036.
40 Años de No. 1 en Español : Los 50's, 60's, 70's y 80's
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f08119db3ec9a4183a553e68b6879f66d940cbe89735218a748b5f52b3f41ab. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES5299500036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576014be36a5f934386f8992b31fde8c6805b7950d6fdf9d153a800516dfa055. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES5299500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576014be36a5f934386f8992b31fde8c6805b7950d6fdf9d153a800516dfa055. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5299500038.
Los Diablos Cantan Con Tony Ronald, Peret, Los Sirex, Los Payos y Santabarbara
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf23ed0ece97700319d9d9b50d699193fc0df94eb5d506c36510b72c588f0b23. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6N21752458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f08119db3ec9a4183a553e68b6879f66d940cbe89735218a748b5f52b3f41ab. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5299500036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f08119db3ec9a4183a553e68b6879f66d940cbe89735218a748b5f52b3f41ab. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES5299500036.