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 0x35052de23af5ec498d5fe539981e7c2b4a2f9b1c5d0bf0d171a5fa7f60e77c2e. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/76f5ab71-77c1-4898-81ec-5fbfd4a67bec.json and https://artists.proofprofile.net/proofs/artist/76f5ab71-77c1-4898-81ec-5fbfd4a67bec.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 0x7d7700e3b241dfb742c95ec8e4aa9f6440e61e2c059e1a99c4b08e2e4e9995aa. 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/UK7GZ2227401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36c318ef41d38d353aa721c10334419080dda687f5b7324219b839829e3d0f6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UK7GZ2227410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88dd4fb819a5b12a555551c689f3bb34c106bc434729537739851ffa9a71ecd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UK7GZ1816604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a9e424f4d2f5f6135a46dc8fd5b154d5e5703f840e49eaeb6d184a711361c7. 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/UK7GZ1816607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a6442c5524c1fe0be47d1f7a32de4bc02c237dd3b928e7a640988cbbcbe58f. 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/UK7GZ1509102.
American Road Stories (Instrumental Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb2243e71f6baf25099cbdcd6ef4b278c2d56ae3692494eb3f18d852fadb5a7. 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/GBAZC1903001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacb720c3133b0eb5ee1e75f36ae56f7a9f8b398047f3e97f880fa81681f8fc1. 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/GBAZC1903003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ece205c2c776f430d1cd4d13f22449aefe1796df5f7449fdfbfead96ab0b3f. 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/GBAZC1903004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0f0fde5662d3494b31f78984e22115e5ef16fe4add0c95551db7928da5a7f9. 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/GBAZC1903006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f03875738cbfd332f945323acfe56964bf6c264db9395f6dd28f378e16d4ed7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBAZC1903007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ef83d961bc8085648e98395b8e5b5186aefad94929cde8e63275d00578aba2. 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/GBAZC1903009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60aa046c458abf0083a7fef1fa966d475e8f06bf6565f3ec1142689cccdd76a. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBAZC1903002.
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 0xde1f392884d801bc135df974235e19419535db05d24d263a00a12136796d83af. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBAZC1903005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27a23274aa2091017b6ff3f1e999f0f4c568c26d22db9333d9048864bebe722. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBAZC1903008.
Sweet Soul & Deep Blues with James King and Anders Lewén
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba1c7ca9d8dd9e479c3e926851e91994a32dfd630f3adc1f888acd42cfd9806. 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/UK7GZ1509201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e4a16503fe46e406ba849bec6ea7722d21b75665713e3d6ceae04e46306422. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UK7GZ1406602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa795fe5a9d521b73b3bb97a726424287c24248575f12a617260dc8d551d97c75. 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/UK7GZ1509206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567b524c66cafa03bc84ef8c84580627cc83ea7f7cd5ec67096eed6708d5ce5e. 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/UK7GZ1406605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca363b489b092c8c1090392056af9870a7f8b71c27faa3331ec2547806c08722. 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/UK7GZ1509210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423f4857c282084d65b2134254774eafcaff881b2e21940b85dbc0658d5f2882. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UK7GZ1509261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40000f415da338c9d4716c10761ceb307bf4e7ced625cd61c96e0bc1d28e0844. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/UK7GZ1406607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd848a6007466fd11dbea4cd1526d571472b188072fffbd143a399163ed3d6e. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/UK7GZ1406609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8644336b56a4f71985d6053ec37472e69c38aff2ba511e184cb5430c83247c9e. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/UK7GZ1406604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ce20db949c3d2bb78aa5ad5e8dd5573367e60b815fe83b7a0bf6c458fe70aa. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/UK7GZ1406606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e01c45b5a51358a625f5ac409f56f6b07f245a72faff342b0c12bda80afada. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/UK7GZ1509209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9199558eddfbf185b0f2e22de2812b6be8b7a986938a45cd883d5c358821cc32. 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/SE52N1900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb92f6331989626ce9aa154364a26ad27f64503965c45273406cee4ddcd3c1d. 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/SE52N1900104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5612caadf310d44cdf9ef0c772c885137a27f5f33c6eff1662fcc4b2350f45db. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE52N1900105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f46ab18767e7eb854b1387a56c3c29f06f378f3c6be86067b70fbf9e62a60e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE52N1900106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ed044ab115fbcd72cc2c4e014e7fe265fc36881bb4ae371ba453592071d43e. 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/SE52N1900107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b64241f356d9e3d040d1dbc063c43405292088779c17f8a1144b2e6097591af. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/SE52N1900108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ca07294b2043d8388b2ba340a17bb1a9b4646f12afd258c3a167a663601914. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE52N1900109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f558fbf5228e937f20fa48f278ef4f91545a81c05173dd6e11ff5f996db046f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE52N1900110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d64ef0569d2449da09d16522c2567e62ee0777bd897b1537eb4874b944805c3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE52N1900113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a5d561505d355f5fa636ca68ed479172ae4d494edbf74eeaea61637d4e5547. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE52N1900114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a60abd08cd9e75631d12237888451afe97ec20bab82e6dad50acc5a6f74b17. 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/SE4HZ2200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a375c8eec4d141f61bb284aa261498f46dd107cc8da01c4b97ef0800ce4951. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/SE4HZ2200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dd4e2a2ae06c97f8ccc9709460b95ff187d2fffb99cf74d5502f2d3076d9f8. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/SE4HZ2200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaecc4816e6df040999c23e601f6eee5b116ac87448da5ea4c2846285fefecaa. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA2P1374593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7987a24e6ba9c50c624280a0a7584831f94f21ef3e726a84fc53474c66cbd4. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/USA2P1374597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c27acf9bd4bfccff4e2af6d7a01571fb633ac8146da21107f244fa5f4138f0. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USA2P1374598.