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 0xf650cc44c11b6841c410c687ccd24e1bb54fcb05476fa160cd7ec63361330dfc. 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/24963ee7-65b5-4429-90e6-5482f2d902f9.json and https://artists.proofprofile.net/proofs/artist/24963ee7-65b5-4429-90e6-5482f2d902f9.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 0x49f9635bfac13b86b4e702e1e7ea806ba76ffd3cdabf62ebd057a178ea5bbf4a. 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/FR9W12319958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0c89359096e1ab0c9724a02a7493de7e0598df06cbfd9bcb1f9d966c3da1dd. 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/FR9W12319962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2d9620943a06a2e739dcaf33ba031c8b097174a8b73f81ab0c9aa265b9f93e. 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/FR9W12319963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea293684ed8e5e7b6b125c6cc5472fe7daef34a8bc46ce455a44b96c8aa2b634. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR9W12319965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b76f05ae0a669131d3d5041e19726dcee8cb141271787fae3832159d0281f5. 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/FR9W12345200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8093d595cb37d6d78a7decac2909c2e25bedd4e0776556369c4ea75381548177. 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/FR9W12006091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8637cf698754cd1d29a04243b6ab08d143b458bc4996a337b724cac3383f99. Chain 2 (Bitcoin): anchored in block 957198 (2026-07-08T15:54:54Z), 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/FR9W12006099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd203e0ee703b4d543afb1250d6b3eff7a5bbaf7ffd69edc658c00999b3cb1966. 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/FR9W11727089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aec2ffdd8fdbc02e4d7cc56e174db270606ed2ccb3c63413baf7670e72630c5. 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/FR9W11727092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd59db700900adf0279f364771307e9bbcd2df2d25472e27e4f6c31b8083214c. 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/FR9W11727093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5127b5af462d635b49002d9c84814faa2317893f972a54b5d3ec6a9d70afa288. 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/FR9W11305148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85e3d1644c9e9e1d506e13bddc9a7087df2dea15c66fd2937d252719c3783ee. 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/FR9W11305147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05887773590f64d751d911d29df8eb5a504ce9cc6679a7de64d5dbbb03cb39e4. 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/FR9W11305151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f06d03143ba0f25e5c9ac4cd02daedcf6bc06efa40d35d34142bf05e3fbe7fa. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR9W11305153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4d56c6d2bfefb4ed7392f9bf9c90e0cd83ba223dc80fb45b93918a038a8e61. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/FR9W11305144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb11301ab8962c5c56fb2ae4089c2f1258a339372b26751f8c4da5a045527bfa. 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/FR9W11002754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc72cba44cc93415ffdac8adeccac796c359d3d43b6aecb822856d2486e7703a. 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/FR9W11002755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7b5a9580a069e0e95539405c812a609c49f2f1ef95ae944baaa73f5dd87b2a. 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/FR9W11002756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50ec1124a02d39263bf01aa99704599a7aacb64dbfc080cf30e852a3c6135b3. 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/FR9W10907758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77b0d1b064df33267c416c5b92047ec9f0a9c4c4950325fed4728bf2b207cf7. 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/FR9W11002761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5060ca08444d95f8c0cd25e1078acdbe51e4c3702aef3242900f0145f53a61. 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/FR9W10907784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff11ba8fc1909eed6b25738f095ec2c29ac7d6563963b9b78ebbd6e08b99865. 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/FR9W10907785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470d129cd025420e899fa140291abf22fb9356977488c85a880a9ce79c4dccd5. 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/FR9W10907788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4ebf89345301e45f8bc31f96c472231058f34c21fb18879c2730b0f685ff09. 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/FR9W10907790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461048246ef2695e36123ea2c5392e779f1a2ef1995d32d9b347ccaf54a748b5. 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/FR6V80814586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5acd784f081774763efecb868ab4e4dc313a3c3b921a887f4f0fa01b4099b57. 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/FR6V80814587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b319c4ccb9abe0f748481c3117abfab48aab6555336d081720170ca850628e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR6V80814589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb66fd83a52d3a25c3f1f8a0c2f116d6eab2eed75b0b314ae437590a1c2c99c. 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/FR6V80814591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a1c8e0006ba376ad17f9ef3928c961e77715ed4a019ee0cdb63e7925b60a07. 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/FR6V80814592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e09cb2b2f676a2a302870e784423e8edf4d9f847acdf3b9ddc3dfc92fc76bf1. 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/FR6V80814595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f9635bfac13b86b4e702e1e7ea806ba76ffd3cdabf62ebd057a178ea5bbf4a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR9W12319958.