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 0x4bd4846b2e517435acf6f68e7671379040f6bf759bdf5970c3d1347f86d0f332. 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/97c90dcb-5ec9-46e6-9504-b98698f86cd8.json and https://artists.proofprofile.net/proofs/artist/97c90dcb-5ec9-46e6-9504-b98698f86cd8.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 0x55e2a5ae489a1c811a8812d9560a9e48d21219205d9acc0641ef5e6f50b3e117. 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/NLM5S1900682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa1b487fa4d80cf41f867a2eb94af5376a62dd41a254dfb01c155be58c112b2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLM5S2201737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6d39f9553afe9c773852a9037e0bdddfdcc1020cbb74bec84538327c92df63. 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/BXBMG2100043.
Rhythm In Me (feat. 2STRANGE) [Club Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4928ab9d10d56d636e28a08b154a39aa65225bb9d6f52b2ec993515f6afa2cdf. 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/BX1GV2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe252bbbde00af17db0bd84dbe3e5f3789478c003dd6716be00187d7581745cec. 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/NLM5S2302066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c8e2effcc43bdd7c2f71584983be9b837aa5b84db59b1b602918a0417109f3. 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/USMH92305218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb013bec6e01b7e69a49800a01e22b702e6d841ea6d827a32ddeaabc70ddc310d. 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/BRUM72201602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36f42a0de4439fd75c730248ab77330ff0318f47be92260cb7a284958f3f91f. 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/BRUM72200704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802001bf6a033589c9eea170edec079f77083597244fa10bcc89b109e3a06b3a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXBMG2100203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35989866e1849de71e70c66f2b31d251e2ff6bfce0612cf14aff166bc411c08. 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/NLM5S2001051.
Too Close For Comfort (Pontifexx & Different Stage Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c079eeab6bf5fac1151024dd51ee2ac3ee7b08627c868e934ce9b14b2cc6d4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BX1GV1900089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b668f33a7dbbd3ecb07139317f2bcb92cc523739d69ec875255cc1f55e7495. 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/BXVIS1700098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2e4488ccd4c2398075f0f4868e24ec3df4ed68ecc603a6b9b1913ec2a9ba3c. 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/BRRGE1812843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6631e6f90af9522e8d9c2dc1c1e7a6f5a81cc3f8fc2f0c14a11dfa38f861b93. 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/BX1GV2400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d75c65b61326a1d2e62f43751e934662856d6d854bd07c99eabca4ae433c16. 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/DEE862400150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570f6fe3e16d67301f28f8dc32fa335484602216d8bf675750922ffa3e688cbe. 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/BR9WC1800002.