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 0x7dff7468c74745ba7d265dba5bc0b63e328b42fad63e9d6c1715544601f90f81. 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/914114d4-07a2-476d-b4f2-650c0b66a230.json and https://artists.proofprofile.net/proofs/artist/914114d4-07a2-476d-b4f2-650c0b66a230.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 0xfa694d17f462c4b412de7bf26e9d9d22b1905872aebaf7c79968a3c4c66f83ff. 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/GBLV61604814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3c4b70452e9f6d910a5aa8a6e41fdff5795c2df81e38faaa07b5c39e8132d8. 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/GBLV61640842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c708b9bd04bfa98f38469ce67552672909283e7549692c36e36b409ad571b72. 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/GBLV61640843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35f2a6b819e2ddc66b0be0056f206dd50c01315888da73bac8353c1bcd47a18. 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/GBLV61614769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677336928fb6c79bd371f4a6daf4860405b59056bf4307cc3a94ce1c82dda622. 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/GBLV61640844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544a4b3a54c5dd50b92d78fe2a67d2d3fc1e5f8b4dca21b5c141044b052c05d6. 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/GBLV61640845.
U Are In My System (feat. The Cool Kids)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75023733ce1a7cff4f03526d5c2379b974aa714bb3479d41e8aa3850f6a9be5. 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/GBLV61640846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c9e8f554500a9486aa131401016f704a5515097a937c79bbb2a69abdd9abd8. 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/GBLV61640847.
My Dog Knows The Truth (feat. Mr. Carmack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ef3f70ed5eff6c9c5f9436cf51818ab5f71d1fa8f598fb1cc4dce5e7c0e4a5. 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/GBLV61640848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e915d786a5d7e8983089b5bddf6000a4c2ed8f1882f9312d4533dde7b7b9cb6. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/US25X1092122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524e49b646cf57d443c684bb7b62fb85dad818b0f00e4aada94574c56ca4437d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US25X1092123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ceadd7b9b47aa7d4d21e819998d5f42c6819b70ead01ad2d355dbf61dfae7a. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/US25X1092124.
Hidden Harmonics (feat. Aviella) - Om Unit Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3cdaa5830f51360879ec1498309619d52a032baee3f0a8448306579dacf11b. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/US25X1092128.
Big In The Game (feat. Snowy and Manga Saint Hilare)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2bb16c7a7cb6475bd313a726746acbbf6e99002a40767117bda6ea1efce0c6e. 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/QZWH32300258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dfb09f55054d15680890201052dee609b6cd848278bbd03a3b11a64717902f. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZWH32400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d69fd42ccf0c81ebd9ad59cdc6b6dd01439b5b038340d7b62bde1b79c2a328. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZWH32400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dfb09f55054d15680890201052dee609b6cd848278bbd03a3b11a64717902f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZWH32400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e62bb8faf5696512ced53cad2684de497fbf25cb0691fce7b20a71a899e20c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZWH32400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23eaf25f6a8d000cb2911734b4e1d1bbd6d71be15fd1ce6da28f22fece422890. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:37:54Z), 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/QZWH32400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6bee9326eae445c46c3e037aae26ac7e9a15b7a84597b957d71e15b8a4e5360. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZWH32400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2bb16c7a7cb6475bd313a726746acbbf6e99002a40767117bda6ea1efce0c6e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZWH32300258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662a431537f0db56851b3d8a4cce6306fb06f4d72f7899db379d20c8a33a56a2. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZWH32400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe203bb4bfbabd4043562e96e2806128e51e10f2c9bd30b4700c20e1620b61c20. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZWH32400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4976e49058bfbb46eadfbcccd5a78877763b9e96372dd813e6067d171c9a7052. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/QZWH32400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac45a67481a6ec900c9b1fd2193977caaf55789bc9dd0222775c41747f6e37d0. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:36:41Z), 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/USUYG1556123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb91693425706cbebb79c0be0560d9bf0e9a189b32ba01d3238b98feaf54778f. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USUYG1570853.
Goodbye My Friends (feat. Jasper Crenshaw)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa467c9127d0f62b5096f8cf82a03eda344231cc4e827eea2aaa188e3d5a065. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWH32400745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba132bd7f41aa0c8d4b06c16abbeeaf7439cfbbbbb3733332e25330c7a2bd67. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:55:58Z), 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/QZWH32400746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31d16b745f7ca5a0f49fd4c67c8126cd6605edac1c8578ff05998f79c24408c. 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/USQY51766105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257171c9a24e8a34d0b304f3126f9afaa6d152d831f6da44e31c9f45d77cac16. 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/QM24S2308301.