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 0x6be41805db8d83eb831d99f1a1bb7311644905651d0185e13effa10f92116532. 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/2f553114-3b87-4b41-a511-39ceafe2aaa0.json and https://artists.proofprofile.net/proofs/artist/2f553114-3b87-4b41-a511-39ceafe2aaa0.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 0xe15cb4e56923fc53239343bd27e205a7e9099da9b50751e2810a68b5c454c551. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BR4TF2100134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a8cd19bdca052e08163fef3ed9fa806ce9463cd8ee4be4f154b779b2533516. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/BR4TF2100273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19d27eabbe6556751a5cdd1af51950e7e5cdc3e4e47b7140e572767b5ddfee5. 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/BR4TF2100447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb567e6045b75f25faee0eea0345159c66f1375b4e2cccfd3b5b12a8942255005. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/BR4TF2100507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f1abe464bf46528631983d4a802c229455facb4d5aa00be21206cdc9579668. 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/BR4TF2100527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344d0759c61cba95f82259436b0d0e8909f8a64f5b08d0e20fcc702be9af5da3. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/BR4TF2100529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54910318731e523eb8764b8a13cd369b058dcb1a2ead68839e2592f243efc09. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BR4TF2100745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1498be0fc0da1a18b7a8d1f464a9473fdddca5b1cb64d4904e5411e2cd5ab81a. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:50:27Z), 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/BR4TF2100767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7429a36be50904d68cec4251c15784b607d5e4827ed37c53bb04bf9ffbe060e0. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/BR4TF2100780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc582cdbe0f4ddf504024b2fdef14042833cfa3ac34f2f01e005ea295b4f7a4b4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BR4TF2100759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b534e9b7feec5ffc75c45eebb138cd6ae6d4aa09c5eba2f8372cf94126405c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/BR4TF2100765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57652e64e787d032e4b7b9afe1220f1c32834a973a88898c88a9019336a5b404. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/BR4TF2100933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2fe0aafe608a16f5885876a4684059c3e065b14147ee8df108f2933836cc47. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/BR4TF2100761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac0bb5efc2381eb7ab43d5d40a867e918f3a91dd7e6250f2878297ef080ce04. 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/BR4TF2100751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5520df65adc38da028d41bdfbf040286b070083dfde0d7daa58dcfd4ef199973. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:30:58Z), 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/BR4TF2100778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11480b478264eed8e38d66cf46e50676a92c4b65e67f8dad5649e059886b40bc. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/BR4TF2200219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b91adcda72892e0776d9a1a74cde814ebd99b4a164f4d6eaeb7e9a9f7e66643. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:54:00Z), 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/BX44O2200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7f8feec16330f8e460fb34996a26c402402a2f566e0a0902c7507cda71910e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/BR4TF2200439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41eca83d3a382890f90e6881d5e231b8b6647a8fed1cb76a43853fb29392c348. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/BX44O2200471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf355b96c9143941e85463582a732427ba5c7bf598e22bbc222f122a91f3924c9. 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/BX44O2200341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5fcdb4f4c42c8450f1bfc7514ec930b4aac97a14620f0b293b7eeda08cc82f. 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/BX44O2200345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c27defabe860070cf040a52db2e1806b57d1d8d3d4869b11a8a35a6137bca2. 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/BX44O2200736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7896f2e87612c39fcd7f1faae6009bda2ee367aaa932e1dc94f2ac5c4c987137. 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/BX44O2200518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f54f291ea0b0e750bb0622ee37c1eba63bfd5f91c09acfe59ecd55a1b8ba560. 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/BR4TF2200408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad2910818f25c52a9bcf673af01d2edb72f92150c2349bd411bce9bd0fcb568. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/BR4TF2200412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8a70628cdfe518c4f5db16118a1584df5d2b901ffd42fe11d21f3688059cfc. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:06:47Z), 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/BR4TF2200390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c109c12039e647df1d98e48ddefd0972b014079d6dc5f7e8ce2fdf556077dd. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:22:52Z), 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/BR4TF2200392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d1256d4162ba4d8fb6519e72ffb096233fd4f3f6068c6eb05f41199820c71f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BR4TF2200400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c96aa1cc887f79fed39bb1be2e5aaf89cc2cd1e5e76afc548c410cc9f477dc. 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/BR4TF2200402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6919a676c3ddd5578837a649d9e4eaeff70a80a0ef1466f9a42979cc74962ec9. 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/BR4TF2200441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbda997e046c45bb77dafa41aab6b30aa391011d31769c8675b74804f37b58b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-19T23:47:47Z), 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/BR4TF2200398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb454ee9417ab657d9b3ca522540932ef0dfc95bc4acb510402215a3fa50d9717. 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/BX44O2200343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfcc610adfade9c4cc6a6c1d4d0fa4a0d373273ae18678f66a4506bf7e7e003. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BR4TF2302134.