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 0x724eb3a2c96968836c6ddb597f0ce5b7a3f0f7a2a8c5f8810a7db63e3bcfb2e5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99804dbd-6a03-49d9-9b75-0dd433c1c163.json and https://artists.proofprofile.net/proofs/artist/99804dbd-6a03-49d9-9b75-0dd433c1c163.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 0xfc99608b8710e7c8bd93fb608430f04811a8c506df8524eed3e1048bd3780030. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SMRUS0077365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324d86b6b14b89872c56de73c9920f08f73b45f686f161b77682d6de6ba58b44. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FRX282080480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071b16972e2385b1f7d175cd125d31d0e532de80520d2689c8d485335e5de5fe. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX762016687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3cb66e2b4f79440634c2483120f3307451b44d3fd7a4e58a4d5ceb8a0fe39a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FR2X42181785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe765ee4eba1c54246d6c8233675e79eade00a9d1c9526de33ad3ed128954b354. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:23:21Z), 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/FR2X42181788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a521b8afad5cfbb317e0a336911627a63c559f9b9793b984105b840eb3ed94e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX202145539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79d016c52fba22bd27e5120faedac009666092e0529c43c482743e89e83b5a2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX762180571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc313eb8e865748d2c95a9a7e2a6b4da4a7a7c0e7cf2cef84565035134d8d9936. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/TCAGE2251387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438ca2d40bfc83c475c92da3733735002312188a1c5f9271e08104c9b54e7be0. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:53:11Z), 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/TCAGE2251388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0821c1a2301681e291791a0154cfa60263bcb22600803068d3253ff0ebfea2aa. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:33:41Z), 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/TCAGE2251391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9c65d396fd88b8c4a260f7b50dc786256e1531e9f330733081001f0369ca9c. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/TCAGE2251396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d033d52204f68759eda0917d1a13129fa7f481b393efe23ae86d7990c2d4ee. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/SMRUS0073412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690196805567aa0b4cc1e3d2bc2a81d058ae46c0ae57aef7743c67ad296a3620. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/SMRUS0074113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4122e3e17074b909597540cc6c58ff315a41fabeae32fec85b76fdaaedde57b4. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SMRUS0074114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172fc0d09fea59327c0e8a7c7e2c5f27bc185bcf7aff8ebd7df4b8a80c7c020e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:34:06Z), 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/SMRUS0074115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabdf4648759f7605ad69dae51d3f335caf2d9dfaa4602815fe11ae8a7b88800. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SMRUS0074617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee20076b3d242fe7653ba2f7d2e0aa490191113889efed9f3875aa46a14bc0b9. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:00:45Z), 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/SMRUS0074932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786a37fb188321a09e68338feb5941ddbf8748c6a824c0d96da41b546bee0c64. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:06:59Z), 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/RUAGW2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f838f753eaa58ea38b4aa49eb7604394ffa8efbdcb77765aa874b40f2a7316e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:02:13Z), 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/SMRUS0075042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d3bb61c8c84fb3c6db87fb30e233a19914d08e03b97fe35bf916c70f4757c0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SMRUS0075131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0876875f25712b90bc5705434bb67d38a252ffa9b56b152b6f52d3baeaf07dc7. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SMRUS0075235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe412a5a1a6c827a4a65eb076fd2b92c340d13830d3e011ec6a1bdf095425ef5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SMRUS0076341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd891e9c455e8085addec66b9323da78fad4472dccc1a57ea5097130b2194dd32. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/SMRUS0076546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a3864149d6746930d2a842e48df5bb96fc3c754513d67c4184156fda5d6f82. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/SMRUS0077229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716874ae75bac7dd27c7baede5111ecc6043c482f5ad2d19b76c5c54ece29746. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:57:49Z), 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/SMRUS0077689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f2fa55382810e0e81cc762f907855d9dbb9311a6cec8b695f0ea4f9983400b. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:30:38Z), 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/SMRUS0078141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b8f21a87c81ed12cca8d7b45e45b32e26f381955cc96c32ca6a0a2fdac0155. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/RUA1D2538147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e858f799c343a7f7f166124398b070d7a6eb81ab9f2df9a62171cd9bb6b742d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/RUAGT2525597.