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 0x14cb568f0cec069baf0abf8397837d9166f042e70f8e5beaf7c54a912a25c84b. 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/d22ff149-55c2-49c8-b72f-9ac0f528a19b.json and https://artists.proofprofile.net/proofs/artist/d22ff149-55c2-49c8-b72f-9ac0f528a19b.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 0x7ac7e43265e1c5a79bec487024ca8e3d96dfe5b914775423db65b054b4c7f377. 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/USUS12100734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e50fb29215786019e84bc2407d98c2a5bb56160f6eb893ea95cca43a6bc7cb7. 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/USUS12400347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038282cbd844706a592363d9bbd024fa9a4789ba3db4da9d87793e10ff0a8940. 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/USUS12400297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576315bbf5cb311a99800d40574e39731c43935790e2baa03589357de91a3dcd. 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/USUS12400213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871dc2f7e9b7d6c84254b09eeb0327e4323097092ce10b85bae3ed9e832f99cf. 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/USUS12400112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30a09d86e1fc643cfa18799c3540fd94f218202d49e426df7c6e51b57185a10. 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/USUS12400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311ec1058fb6335ebf64a4e37aed5bf984f6304c03a1258553d368698a523f84. 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/USUS12200260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a04b441dbf4e7ff0dec98470a90d3b923b26abf96eec6316a5110b7a476c2a. 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/USUS12200078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25ea04b47ea73f28188531fa96bbec71faba4561b9adc6760a1e9276273b102. 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/USUS12000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f80c30af927cecada6ecb656916074c4b478f28ccf2c0226de480964b6ff60f. 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/USUS12000098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f3a535603b2894aed00bfa83fb7898dae98f826b8820b5dd0941a27bf02c66. 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/USUS12000099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e02aafec042f2999de834c42258cedad6ff2e165e9e3e9e0548da42da893473. 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/USUS12000100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe5f6db95b244b22a0792deb09b64d752c59c7278483abc9ddb6aa14ddf69a8. 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/USUS11900547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7511006d321b6d595aec9d29062273f2ddc586621fe8b25798c07c125ee1e783. 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/USUS11900604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725902e417fdb437ca14c2a0892cf7ffa8e13e29af497102b168f4ee462b7efb. 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/USUS11800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f3a535603b2894aed00bfa83fb7898dae98f826b8820b5dd0941a27bf02c66. 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/USUS12000099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25ea04b47ea73f28188531fa96bbec71faba4561b9adc6760a1e9276273b102. 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/USUS12000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7511006d321b6d595aec9d29062273f2ddc586621fe8b25798c07c125ee1e783. 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/USUS11900604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe5f6db95b244b22a0792deb09b64d752c59c7278483abc9ddb6aa14ddf69a8. 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/USUS11900547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5489a3151fe3ec7ac73d40497b545b34c3ca8bdcc2677d1a2f986f5ae81d6db. 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/USUS11900422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725902e417fdb437ca14c2a0892cf7ffa8e13e29af497102b168f4ee462b7efb. 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/USUS11800021.
Live At Night (feat. Sophie Simmons) (feat. Sophie Simmons)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1574c7f76e748dbc24bd1ff512ee5a1cc3c71fa83a2b816a226b985626d6fb5b. 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/USUS11700398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345cd4ff9237613250924e2159174ad01d31fbe2f91fa63b8ad770f7ffab4339. 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/GB2LD0902446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4065fcc03cdb81eff2cce0a9f5c4e7835c9fce45c99c292c8ec41ce00b0595. 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/GBKQU1657426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4720190440a2ad4319e5ad2d68538a198583f881ade9c298f1ecfaeff46c12. 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/GBSMU2611868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a3a525b2f1d7a9f0bdd0c474e997cea4a6036d786b3e5dd468f641ee8c77f9. 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/GB2LD0902328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0477dcabccfe269a90a77ac9f9f80e8b6a1dcaf651d8989de35ba9ecf9e707. 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/GB2LD0902225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe7704a592bed0096b938d06cc43295f4ab5cfd0abb5572697af6a176fabfdd. 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/USYBL1500947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d5704cc353830922a4a1e1b87860b817d2afd2fd97062da7077c36d08e38fa. 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/USYBL1500948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7284b006dc0f0848573bdcb483facfe0f5b1cd00829a7d1d860af407c2eb56bc. 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/USYBL1500949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc911105d30e4b286d5af1c2c804f98f49228b2817136490e8163e23e5ea7c4. 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/GBSMU2373377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337970c1d3c627220e7b6eafb2a0ffc7903b24228c8f8162ba0a18c44cad0e57. 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/GB2LD0902121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac488445c9f84a8dec1a68975d7dc25ea867cb62ceb1399c59953ac546fb680c. 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/GBKQU1562217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb83a8409954e921c45b31b95971243ba4503c4e9e586e15a4c3605b3848b9e. 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/GBKQU1546805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8aa2bbdb333bd58836146880ca4596f97bb1324be9a2684e717b61ffc0ff156. 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/GB2LD0901836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2490fa83f896170b3bbfd102272ac9f21a4fd5d8bac7078fce92811114b747cc. 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/GB2LD0901779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e68e382674dd7f9fb337cf18aadf9047d40e6ecd3d67e83d08eafca0856aa2d. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/GBKQU1471800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b5ffb33a8858418e3915da911158272066029157b9ab8e6e7e99faa46389cf. 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/GBKQU1471801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a63be2ea7d58109480f2cd58a0d0cce3fb664cb3ff440c27e2f573913109a32. 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/FR4GL1082996.