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 0xc3386c3cb48ed7b8c90e2e56f0444f28c8b3394e32f31edad9484e7d539c26bb. 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/c48ffb3e-04ae-4d73-9c66-4635e920a3c3.json and https://artists.proofprofile.net/proofs/artist/c48ffb3e-04ae-4d73-9c66-4635e920a3c3.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 0x242841abb1212f3ad6c5300d2bc8d384e1e52da27075e1c748eec02e44f13594. 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/QM7282030195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083cc67d0c765ac07d5eca712d5bed043d35481d8e764c05e54b51025b6ccee7. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QMUY41800173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba148929183add6d24304c8b7853a8fa21c697eecbc963471201958deca5df8. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QMUY41800187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f9c056f9d03d83a472d8bf8a5d930b044b3be5c15f0649519ba275d7b4ddce. 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/QM4TW2067288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a31f9ca9bab2200385a5bc92c8602a668dcc2d66a70f8f92761ca546f9ce1d. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/QM4TW2067289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78257b29c61160605bce6568e854baf16bdf66b8eed24f04cdc5461b269b1a6e. 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/QM4TW2067290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb39ee23fed00e766678d7426308aacbe1fd5b608f25ddd478b917ca3ec4a63. 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/GBWNE0800262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242841abb1212f3ad6c5300d2bc8d384e1e52da27075e1c748eec02e44f13594. 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/QM7282030195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7f81cc75dc4900544f2da3f5020044be8b76cb1e55ab8bf6e4de6be7ebf68d. 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/QM6N22014173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39a87af396f7219bf0122e51c5af6ffeb2ff7301443f5d1d842f4bde0dab779. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBLV62040387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd579cedef5a246e97ac262e2b95f5031332535b48829305c5fcf8ce30126ac8c. 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/FR10S2143993.
Enchufada Upper Cuts: Four Years of Global Club Anthems
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf12b801ac060151cc04ef76e634911d67b17bea7a57a4ccd59b0b61dc9f305c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/PTEN11300040.
Sunset Ritual (Mixed by Anane & Louie Vega)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe764ee4d7dd86ca0b47158596b6914eaca0b7151ef411426aa7960549b4a90d1. 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/GBKQU1487454.