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 0x4d91548bf90744e725bfc64720c3b0f9d69fc7936417c02fab868cbcce96e1f1. 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/dbb7f49e-2fe5-4e69-9fa8-f339ac8a0f67.json and https://artists.proofprofile.net/proofs/artist/dbb7f49e-2fe5-4e69-9fa8-f339ac8a0f67.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 0xf3f9d5a9d3986575afbf1fa58559ef4442fbc600daf12c28cf6d262e3e6cb1b0. 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/CA5KR2466000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb864131765caf63bb8857e63ed3a0883275aea565841a94004fe07b7cbb506fe. 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/TCAIF2413149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5083af1f39367cecf064b105f2095d077723640358902d46edec66a656155ce. 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/TCAHG2394539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97e1e33628f880cbb78dbda6f00cf13b0a9157bea6c3956700388e26d2053ca. 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/TCAGO2241152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7fb560c2a19079c96607aadf934a96bace859576d3778f077a3dbfead3fa96. 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/TCAGG2218265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde14c08cd48631a37441aae01d2ed7b473e8bb309f9f1ff0149752e97c85ffe. 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/TCAGB2281920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4154c98a0aba29f9b22eb74bcaec015f4594fa3300b5d70b1c7dc4926be7d12. 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/TCAFF2086030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b401a94c95d3b6ca0f0ead6a931636f2f69052a3eeafbfe74a108848d1ae4d4. 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/TCAEN1934682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9924e41b54d905b10321dc836a6f8e8c74175733415bab7ff7c74bfee2a6b852. 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/QZES71962830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7de30cd68ad7b13165e0acfce7165874298b47fc385bccfdc0c13642178624. 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/TCADZ1878258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0e71c212ace79a1c6db86dfaa74626e2b25b0f82aff4836592f4533b2a8670. 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/TCADT1833343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32209bfac32c2b5d4fd8299013d3c32b5b3bee55b3ac33322af2a863023816b. 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/TCADI1729812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea90ba9d33b30fb61a89adbf7c12a422b60dbbe9795bd47aeecb7a461f2690f. 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/TCACZ1728875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9170373c8db761582363f2afc216947c6e59b7ad58d52fffe61401a0b9b1ce09. 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/TCACU1694407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a20357da2408800e765af932abb767e13defa8d5ce3609ae090aa8c91e0e7e. 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/TCADX1819188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1fd38767421a177b2ea8d3a06b6dd42f39e1b966e85ad4329b41ab2c3a7dcc. 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/TCACQ1628801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0683041cc3d7df79e712a927752b827c7ac33ec292cfcb7f2f554eaa21143784. 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/TCACN1633680.
Why Do I Do (Mattanoll Remix) [feat. Jason Gaffner]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61be457f3e13b5d430c37ad16158a1bff5f964e2e6a84a5a487ce15bd8449e1f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCACI1557666.
Why Do I Do (Funk LeBlanc Remix) [feat. Jason Gaffner]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3648f08eac97b5498e7ce09b03a408e9da0fadc3cbef10811690e70bb272414b. 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/TCACI1557685.
Why Do I Do (La Felix Remix) [feat. Jason Gaffner]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171a30357bda52cf5344f8029b9eff0d0e88305f2320d2349d391215f768eb1c. 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/TCACI1557705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e289c5acc62071affedbae9d2afbb84983cd61f73832ac43d6ea8df83b75833. 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/TCACG1578209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e48397d9beba9b690c89d916dc37adca0645f47f159c64403a95645390c5f29. 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/TCACE1522843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f23fa825afe288829125db1a450414104f95dd73e5aa4c165effefa29a8014a. 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/TCACA1423357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f36741f903b7df11239127a2859c194efeabcb3de6832f857cb34b0b2e9565. 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/GBKQU1476397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3436555b048b442af9373962275f160f45b7f6cbe90b7c31d612824f94954f29. 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/TCABD1277199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28fdb1f4d618fead3df54322b76ae4738a45a252f55db765b000de9dce4671a. 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/TCABA1133554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d5da2b33838ace92c28b3bffd743d31ee85e7da96b2a074199b474559ed6f9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKPL1803390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c51e1c039bb6036fe0a96bd615cfc088d56f061afe711f30747047929444ed. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBLV61415969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea543c1bff12bb2d54c51fd9713092209396b4f4fef1607cff95c8566989ed1. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/GBLV61415963.
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