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 0x408daa217f0d6e2ad4e6da4df3f7a0013318b1c39b3d113b08f3100863ccaba5. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4d6a837a-0d8c-4ea2-8419-e9edbbfaf6f8.json and https://artists.proofprofile.net/proofs/artist/4d6a837a-0d8c-4ea2-8419-e9edbbfaf6f8.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 0xc3515b34d42b76a2a49560b7609e1c97472137c8562269d209e7180e99ea23f7. 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/ES6641900153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d1d18ec7a3cc758f693b7562c042ab2942da5e7be5cdc4e94d1adaa8002fbf. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/ES6641900154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d6aaee00edeac7d22fb29b124c34177516f4ad1c58cdc2861581bfc94fe4ae. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES6641800187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904fdcf474adbe95cf94c86e106b0d461fd3062de08625a591c4fe9e273eaa54. 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/ES6641900156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69b9ab27623c270b6535788b0bb1bcc46529b54f9119e40d17f59e04a6565cf. 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/ES6641900158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfefa045420236aed75d70b778512e2a43513fff8d66fc2f539a70509930b4a44. 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/ES6641900159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4996e4bca717c62649b8a892ab771c3e4a4ed437e53bae2d9aad40f835f1691d. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/ES6641900160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788bd231716fc29925e64afc3a4e849b44687e484636241f3904186e74c0750b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES6641800185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc271984309405df2d921c592ba3a0810ec8d4de88493eed996b7f45b78e747. 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/ES6641900162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb809e5ae1d06a9e93a87508fb8eb568b0c44ab859d45bf881a670781d389addc. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ES6642300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788bd231716fc29925e64afc3a4e849b44687e484636241f3904186e74c0750b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES6641800185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b12f289f65c4e2edc2d51236ac9646ce33e743d26597d66f61d410f0afc02cb. 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/ES6641800186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d6aaee00edeac7d22fb29b124c34177516f4ad1c58cdc2861581bfc94fe4ae. 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/ES6641800187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6db762a705d479d2a6591afc91e8fc008cf84347cbf5f4e630465d68cd02cd. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ES6641800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4610754fd8c45550151381541283cd0d249f3bf3421e9b2b3a433d1bc253be61. 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/ES6641800024.
La Amiga De Mi Amiga (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d0cf7d215c0723322c7b7fa5c8f1a0eba6299a8965a16ff142b496b35df666. 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/ES6642000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802a3c470b9568bf6e28774fd80354c1f914a296473c280218657778a614c243. 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/ES6642000068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9f960ee2b9dbd418efb17766052b727c58f0b3a762f389c641f5aca16b21b2. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ES6641700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbaf75cd3a85128774b463c6a897c95c64bd8339e2e1f560b346e266f7707562. 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/ES6640100018.
No Future: A "New Adventures In Pop" Compilation • Unit 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276d78e5de869061f011ae5dde336d6040bc58d732476a6eb24b6d048bae50b2. 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/ES6641800087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964cc78b8ece9210c708736215ad584ac48b2bfa1b2d72f5ea2c0067f4de64b6. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ESA011845663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca614532844718f635e2b64a269a3538c8460bad200164f6122fd7f4448ba386. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ES6641900019.
El Que Sabem (Original Motion Picture Soundtrack)