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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5813af0478805670b2eeb23a0699095b47c56881135e4548a62424c228ec3f2e. 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/be78365a-3796-4fdf-8646-dcef624a3027.json and https://artists.proofprofile.net/proofs/artist/be78365a-3796-4fdf-8646-dcef624a3027.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752bf02282289b3dfbe0f1c3be0d027a380c10e6ea1cb261d0408f439fe07edd. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/TCAJH2540073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda881a1b17f2520aa9bd28d38dd6b5d1f1f2646ed05a76919a0b7bb8cc934bd3. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/TCAJG2540075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc3a52e12cd23fa965fabab577677df7b20311b527f028443c5ffbf284f66bf. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/TCAJG2540078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24d6c855f9c5460e112946c2dc3707b08d26e32d567c37b625d92c3515a0cfc. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/TCAJG2540082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf686078ef9f7a91eff6adeb76c3baf10cd32abbcf9e770e0aac526332efdd427. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/TCAJG2540085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fa686e134b7b771b759946681bb4750d20e9011e505771624a56eb095defa6. Chain 2 (Bitcoin): anchored in block 957622 (2026-07-11T22:55:42Z), 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/TCAJG2540086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8669af00fc35cd67bedad4bf2d63543cbdb972e6ceca5451b2d629cfee9eb2d2. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/TCAJG2540087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53b125846fd5adcda9221dbde72cac1b8aa54bdaba2f9ff481db60151369664. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/TCAJG2540090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8eec1c6dc20d6b14212fcf242e1f48bb6aedddcc221962e2bfeaca627778a11. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/TCAJG2540094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ae0ad74ec8c0f4aa1ef1c28bd28a255135965c096dbc760c73415a2e0d0f20. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/TCAJG2540095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6dca83a365d975acdf195bf2515521c4c0d19d786848a76f7dc8a6349e5fb98. Chain 2 (Bitcoin): anchored in block 957624 (2026-07-11T23:13:54Z), 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/TCAJG2540099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf83d286be86d693394ce7e8ee27789a5a10212e92350c28bc96eec08a8a7cc. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/TCAJG2540100.
México Lindo y Bandido - Remix Dj Migue Soria (Banda Sonora de la Película: "Los Jefes")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8720460f6a8c5489b6ee3746eb97ebdfbb27b0ffd560dfe92cd3afeef8ebfa0f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MX3601600016.
Éxtasis - Remix Dj Migue Soria (Banda Sonora de la Película: "Los Jefes")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8a9e1e46be05117a5ca9823d8681e396f757ac67136f42e870ab908ee3edc1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MX3601600010.
Los Jefes - Banda Sonora de la Película (feat. Big Man, feat. Campa, feat. Draw, feat. Millonario, feat. Sonido Caballero) - Gift Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6417bf66adcc36548778795b1f92fcb5e9e907371a944b48ca24470747be6de2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MX3601500038.