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 0x1ffe100954bf569872178eb290f75504db68651b756c60ad2ec603d37d1010da. 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/8b8efc17-e84f-43bb-b10f-f5355a888feb.json and https://artists.proofprofile.net/proofs/artist/8b8efc17-e84f-43bb-b10f-f5355a888feb.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 0x9577c23448bcd314106a98c14a3f3f439f2178256bc19ec27981ac059212ef10. 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/USMO16500449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544480650d7d5ca33cf6df38e00d45fa1559ebe464c15d172d111cd2a75528e0. 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/USMO16582608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c71ce5b2d37d9c35af5a6aaf021609a91cf881335b28b3469edc869759f10e8. 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/USMO16572024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf6323098370f6ace568b1f7d4b85f3329af4e266a9c39456d10892f330fe55. 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/USMO16572025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd7b557ce79d15aac08f0620a3486555e3e174b0a64fdee09f6c1f2f572fd65. 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/USMO10110335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e505dcd7412e2098afd66d44f0c5b322fd07c2e3a221656bbd8cc26b1843df0. 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/USMO16572029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41dc10f54f1ec1ba430777a8dd2e021c9eaa8da9695d7c27f6c47159b8e0dbe1. 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/USMO16582708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44535ae3c3ad1ecf81962a626ef3b36607d3f463bf96f9294a2480a8119bd117. 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/USMO16582853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924e6b944f64d045ac7f95272d35c2a400e56582558062c901fc2cc840f3cd4a. 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/USMO10110338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3b6f36aeccd91f30e6cd6ea57b570a6169fbeb617d920946be51ab41936082. 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/USMO10110339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5237966d41609a0027a9bb51a98760bd8770b68b44f35bdfe731f089a96647. 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/USMO16582857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40682e5befe49c9315b0aa3fb9d02d025c315c88c5baa9db90f6d610ed0c4e8. 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/USMO16582607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf5ce095120f857c8b474208b59006e69bce975d8a2242fbc0652f22535ef0e. 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/USMO16072006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb5b099720acc5822b8b6ca72b801cf86136618cd5d0a4c3d57ab16ab2b4d9b. 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/USMO10400466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586b5254eddbe974075bfcee00b99458fd6d49a8014765109c2c44dac6fb6ca0. 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/USMO10200800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9221dab5c074249d30c73f7fb651617812a0408da00d730910eef3a6b5c89b0e. 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/USMO10200793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7510efa47f988b77200f8af3f7946d56f6887ec9c7ccb17bbaaf067719e01ae3. 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/USMO10200790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6b18e8487f257fb051cd014247c0a7d95592b584e126b2e7b4277da4bf17e5. 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/USMO16582878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca25518f0924bdf9df48de4c1121ee803a81e2c58127aaa4e4628dc2705cb66c. 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/USMO16572026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad079debf14e9cc01759d3e07e55033bcf28ebe67bd49105d846d1f90291267d. 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/USUM70501207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544480650d7d5ca33cf6df38e00d45fa1559ebe464c15d172d111cd2a75528e0. 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/USMO16582608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef69c3040a560f21a7d81ab85b666a564739a71cc6529027af705556d7569b76. 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/USMO16672030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8237d4666d968f27bbd2652ae714737678379157f6350b02a2dc2033403ee655. 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/USMO19783162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c273b4c97d46ced8a225d2608f2b5aa14f48d5d61498d6529430322772e8b1. 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/USMO10110353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1646b87358d8b921c49206c04cdd8cedb78ac6cf565ad4f25438ddc230808165. 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/USMO16782659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6068ad3a6d5c5240cb776e8a45c79dd63b28cbced287d2a7fec79b1b258cdac. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USMO10110360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8314cece4683f9f240ca8a693c5ca8f1fdfc100e77eeef1835e960dcff256a9f. 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/USMO16882623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93351d42221b6810f4163129a0c28069b90871fd5a4923dcd19183a2b7a08a20. 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/USMO10110317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd637bc42e85f60c0bad151beafbc4b17351cd37f717c4ba0a8ea82a3cecd53b6. 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/USMO17000525.