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 0xbdd10d9e3c3ffd21e4976fa3d77183affeb2608edbb613de05ed8cc425e1413e. 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/ba54e799-3927-474c-9f3a-63246c71da15.json and https://artists.proofprofile.net/proofs/artist/ba54e799-3927-474c-9f3a-63246c71da15.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 0x2c9684bafa4b4e6eb8f65f8bed6dccc0f7b8dec6d4963c6753d4f6e83c8ccd55. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US8391800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f273b9599e848f97d4679df71a1451008b6d6f38db13f2046d18449e576b581. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/US8391800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d4c797c467fdce249f24b4dcdfbafed336f5adf758debb1e3d45708180b2d4. 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/US8391802061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1300211300c655fc9a8f65e1301a6d70f6e46b3513b750d24cd637a656eedd80. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:29:02Z), 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/US8391802120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45f20530844cebc03412500a9d3e8eba489613a398ba64a1bbb77e88099fd7b. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:48:05Z), 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/GBLFP1942839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebf8f23a06d4162ebf0c722a66c6b2c334e418e0a689453c034360f2ced580d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBMA22017740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ccc53cc6e30edf5a518732b8af9d857bf6754c1bee439ec48ac00908caaec8. 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/UKW3Z2100622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1c84a8e63015ea7ec3fbfd686c1f36ed6edab6a6cd148f11f444cca6e372ad. 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/UKW3Z2100774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255dae10cefe77a835f4ebbbaf971bea3175fa281fa5af282d94a62240bc048a. 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/UKW3Z2100775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8623e24adc314441eaaa04d318970fb2026636681ed357219e8c9b423263a4. 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/UKW3Z2100835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45863a7195366de3984261deeac1c74e88f98d828cfe36f74f949e078a99a0bf. 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/UKW3Z2100837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddf3e5a7a0aa7a6d16e8cac782520408f8353fdfdc957629cf4e8d5309165a2. 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/GX53U2089435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a2406332310616261d8332294a2bd3887ad81111f778a71f55578e0c90c470. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBLFP2228815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1782c9280683c9c8775a9ba1b53fe2efdf543ad1d03579ecbd99008929c34a7. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/GBLFP2251519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4e4dbbecf42af6dd9f39c4d6c7f243bead3c3c0dfa926f8a76049846f2689a. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:51:21Z), 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/UKW3Z2303144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438f2e5e59587ae580f43b7e418fe1ed24d00b5aa2dc57a43b5aa6d2e01e418e. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/UKW3Z2304260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906f484c5aaf72ad47d85c0698a019d39bce60b82ba8bd285988017836cd1354. 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/UKW3Z2402385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdfaad1d2a41060ed8042d098e16a176234946fafce94a5016cfa34ec3d84aa. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:07:46Z), 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/UKW3Z2403861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438f2e5e59587ae580f43b7e418fe1ed24d00b5aa2dc57a43b5aa6d2e01e418e. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/UKW3Z2304260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb449c0d7bcb984fd6ce2eaf4ad83ed2b5955f14b807c7f171df58af822b8dccd. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/UKW3Z2403863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9e3ad2c08ac4098b2eec89e1799a6745e4d2808c3624617fab178ca76dee06. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/UKW3Z2403864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd00f9488eee2d3f54994c490b97b5057e7c95d8f97292e0557d55b8fb34f54. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:57:14Z), 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/UKW3Z2403865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6dd9c261d87ef44d15b73a4db271e5ef60097ddc578e70de1d0ed60e3481e6b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/UKW3Z2403869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a312d8883bfc65798a99f1f132f11a0037ee85e0a06fbec548fe6df963a013. 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/GBX722000278.