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 0x86eb68906116874d9156c1dd041133ba8433be91d763ac2a05163013760b1aae. 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/2421010f-a382-4dee-9b41-a54bb0154135.json and https://artists.proofprofile.net/proofs/artist/2421010f-a382-4dee-9b41-a54bb0154135.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 0x85b5283a3796da97cfb31a8818a1d17816b971745060fff4fc924ad258bbd341. 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/CHC382300121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc881c973c492c2bc58c00cd3f19ae43eed9a568fa8ae4010d1563cc34e80b89a. 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/CHC382300122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e458eb6da9d2b4a3de2c30fd1c0bbb473a3d610050142ab278e03a4ed08d75. 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/CHC382300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdfa5f8d2a33006d9af4326a3644103cb940cb0754a69fc3ed1ef8c93628ef1. 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/CHC382300124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34031eecb931f1e3241485c899d6c1bfa933963abd88a2f1fbd3301a06ce3061. 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/CHC382300125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7af8ccf0a6bb3fbcb788f34273f2eaa6220a4be9a82511aacb19248e75cf7c6. 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/CHC382300126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9ea9287c5b100f6296176ccb81c4488ac8bf64d6806d4cf628909daa8b5aa1. 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/CHC382300127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea4125091e107d39f46728484358ab11e5a03da4e49fe28c0419e87f78ae469. 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/CHC382300128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4085ff127f444296e27fdd464b3d3e0815e164d936c64c289e3f39222454b8. 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/CHC382300129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7748bc7819cdb58408267ea2ac96ddc337c4bcbc1748a2b51e45f6087de2af6. 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/CHC382300130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0440d6262fab6ad8aa3ad34e65d02640990f54947281dc21032c398e53628d. 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/CHC382300131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90ab46d568460f58ee58aaa5d57712ab8bc6d0909f62d2c892fd44675e77889. 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/CH7812102761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ae92fba061f051421bffc0c78886b6cee00cc7a405938819133e8b23dd2b74. 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/CH0012400165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6805dc204be3095fca3d8ffe2e2b1f9c60e96a3b2aa5863a37e774fd7032d4ca. 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/CH0012400121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9273fa2c1ade8b47300e184d1e07507e9783023859d42bd5695d9b295700d68. 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/CHC382400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52823ec0d30e9bd11ccca0fff8666b16c5a54db38b562e34a9da104e1344577. 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/CH0012400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2034d827914103dd6faa4a6723ffbbadce2d1d8aa4137be0f26611aefa2ffd39. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CH0012400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e0bbe6860a0af489b73c7de62f223c70b8a93574b6cabbf0e8c206863abec7. 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/CH0012300231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6bca7091a663de1036fb3d439f85fbeb149e388a0d0c0ae1f6890db924c352. 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/CH0012400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8464bac14c9e3acb01617ca2eb562afe45280df1f3e32a935a4226fec361aded. 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/CH0012400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2326ee2aedf76d1ba59614a947b4d4559d12673993688929d66082f42af5a1. 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/CH0012300177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0ed2685c03073ab0297c4f084efc706dc6ffbb764033a20c25a3409e4726d8. 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/CH0012400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6bca7091a663de1036fb3d439f85fbeb149e388a0d0c0ae1f6890db924c352. 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/CH0012400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2034d827914103dd6faa4a6723ffbbadce2d1d8aa4137be0f26611aefa2ffd39. 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/CH0012400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e0bbe6860a0af489b73c7de62f223c70b8a93574b6cabbf0e8c206863abec7. 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/CH0012300231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2326ee2aedf76d1ba59614a947b4d4559d12673993688929d66082f42af5a1. 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/CH0012300177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43c4444685ccb42e0857ea25c9df7cc18d55470481267a3a1884ef660fced26. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CH0012300225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31f0c13ae30c8e14950b93a3fc285e98bc7f3aa269d6412223ffeeb637ca114. 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/CH0012400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfe830e74a8622c78e2d052dc95bf6337615b292df76de462ec7b63d3cdeec1. 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/CHUM72400138.