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 0x20764ca50376a256d335481a471fb851fd69fbf42a0e0373ba032edeed20f8f2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dfc38e08-cc61-4edb-a47a-4c6cb7ca441b.json and https://artists.proofprofile.net/proofs/artist/dfc38e08-cc61-4edb-a47a-4c6cb7ca441b.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 0xf6d018368a3e471c9911596a2eb20dd70b9c9160208acb58d58de38974a0f6b2. 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/QZWFQ2357120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcb407ebd91900b734406c2b5dc51b260375b7ecbf19bd365b8e3d74b74955c. 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/QZWFK2332443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a4a201a29ef82244a0aa0479dabcd9783b8c373eba1a62f1a70afae004774d. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZWFK2326858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5d1e1c117fddee235abe848b470e6be7a6d0393ee2e4861bf8edd406743f34. 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/QZTB82399482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b463bfd1440eef5240fa0327c619f1bbd4f349e48837fa2f92bf0cb907a36e7. 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/QZNWV2355455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b5c2c03772ac198e018c2049412a47bcb729e34e5c70033f01ddbde12f02c7. 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/QZK6L2324924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18ac16ed564c8e506f6fb8a51a00e87b1ad51e36776ed9bee8266013450711c. 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/QZK6Q2392720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33aeaa428e19055ec24fd2a233b12726f9cff2182086bc449b6a1563ae89c54b. 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/QZHNC2342075.
mf 664 (kassaii, jahlo, melowdie, fntxy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc8303d423fa982af980aebc0aa6e71479f896f20cebe46c4fe2d0a8e44e5fb. 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/QZFZ62350021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c6a958c68b8788a405a46542205751993d419dd9d4678ed7448ecab5f38dbb. 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/QZFZ62350022.
Lokote(desorden kdc,melowdie,fntxy,kassaii,jahlo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bfd719ee8af7637083dd36ec810476ff78686c346b973cfa14341d86935491. 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/QZFZ62350023.
perdon x perderte(fntxy,melowdie,kassaii,jahlo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e1cf498d8cfda300c1b316b97a6c240dbdd4e02fa6b3b67b877af0510d91eb. 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/QZFZ62350024.
sanchez forever(melowdie,kassaii,fntxy,jahlo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b073e6fec14d31f371b0572cd9c86fd68c9105e519518d0ef22df080cb0f209. 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/QZFZ62350025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d689e78b97af32547c009eada6dec2772d051a5e92c04edc732ea718a3b8a3. 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/QZTB42269911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05acce0b6a100877dfeb1cf127099d212402e6fcdbcf58672409abcfcb86139e. 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/QZTB32246909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5c10ac3a0eab948430d42d93bae1d601b1cc98c874a07a809cc647dccaec76. 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/QZTB32296777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1498d280142da168d8451faecb9ffa104e80454ec8d0c2c7681534df6d3440d3. 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/QZMEM2276489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ec694e80dce0bec9588092e5ec3518800843cb99b69f3e817ee4d4368d0e16. 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/QZMEM2276490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ebe701be03fed1046feb730b83ac80958a660865913fde9534a88d1211ae32. 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/QZMEM2276491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6f8e21437c78b5902d29c9dc65b2d58f3ab769ba07bb173cbf390678c52645. 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/QZMEM2276492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7c2ba08f376837f94306dadd9e855b8c2caa344668b4fe0dc62b3f26591819. 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/QZMEM2276493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8115553112652f724a14352e175e2e6abace3d3a4a95369c0d1d5ce82252d3. 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/QZHN62246210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43805124185625a503a1a1d0c726304cc144a82d7a26ab210ac95830b6fec54. 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/QZDA52201844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f956bda10a206217767d0cb8f474217515be7a10c4923ed425fa03c4a81edc9. 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/QZDA52201846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7045e7d9d0d4994f7627e868f8c3310968206317a8287e3626781120b4c247. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZDA52201845.
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 0x7eb800a9c36690c4cf871d1cfc8bae93a7fe292e1ec0a37d63702dace97c7e58. 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/QZFZ62247131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43abfbcf5ef1b4e14d8fdf793a8ca41f74e05b55e97e22c226d2ad8e96715057. 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/QZFZ62247132.