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 0x05e745f54c3a3061b3905414fdcd1ab6e7b2ea9f5eaef72b55b415656d8e3e71. 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/83cc571b-6a64-44bb-85c0-f9bad31bd485.json and https://artists.proofprofile.net/proofs/artist/83cc571b-6a64-44bb-85c0-f9bad31bd485.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 0xf8a8f2c5401f8a4d5c91f60323c2c9997e54dcb136da39e04e589005794ce040. 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/FR59R1645305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4cc85652ebb1147237007c032a1c439ac1a127a4923299db6ef1739814b024c. 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/FR59R1645306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761f48fa18af8610ac294dc4cbc81cbec566896aa447d5c57974f5cf64def367. 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/FR59R1645307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9f31ca2c3f15bd1f4693cd7083e059495a295b114483b1956be65438ec14ef. 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/FR59R1645308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65df9f49a7bb29bdac20db622c68016938fbb2a9495bf6c2e5f039e89342e045. 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/FR59R1645309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703e5cecad7578d5ab2bdaa6f9941b0cc07ab7522036178290a30bc91cd5c549. 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/FR59R1645311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135ef8db888d2a8c50d966dccb7cab26722b7899e34855d107098ca546c09c36. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR59R1645312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02234a132b908eb792dd3950186762beb6ae9e7822883990a5fcd2f23d3b134. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR59R1645313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32205c9b1e2a2054ab525df1fbdc8f5e8c21dbc3131a3bd44913d78d889acfa2. 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/INO131300166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd2852bf046578e5fce60eeb2f0c6db5192101840c4cbb203d2d13562fd0e2b. 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/INO131300167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99cd8fd70e393badc0c0a06be27da985a2c5a83217b02c897ac6758e2a29ca83. 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/INO131300168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9231d227a135f4e7871638a87eb8155b8a80fa3411acd1db5b0ab135e1ba1842. 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/INO131300169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcbb32ef7e2b345faf213f5b64f63e5fd9aa7eab281ae1fd19155dd041ea3d9. 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/INO131300172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4609baf1343408d0b66a1a815ec904a8f1c964d3642e99848c6561561521e45. 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/QMFME2131356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602d1d4a8078e7c52f93460df41d4aa1603650dc82519bd84e38f9f0fbfc029e. 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/QMFME2150065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb20163e83d7471d5d3c1978080e6eceebc8f4f091774ef4248680e44f72063. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QMFME2150066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfcc611510f34b9d49ed75da44cfd9f411be4b2fdc598a5ee17b23c3af10477. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QMFME2150067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bb04f6afa25ff2e85c75486d9becce2ef3611aaaa7945fdbd29441426e99c0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QMFME2150068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfcc611510f34b9d49ed75da44cfd9f411be4b2fdc598a5ee17b23c3af10477. 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/QMFME2150067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb20163e83d7471d5d3c1978080e6eceebc8f4f091774ef4248680e44f72063. 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/QMFME2150066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28166af212ce54c9b382132ffecf660a3da34db499562c9b0ed334e1250b7171. 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/FRX452119840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4609baf1343408d0b66a1a815ec904a8f1c964d3642e99848c6561561521e45. 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/QMFME2131356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d6133b665109c4f6f9dbf675f8a706c3097ea0920554521b33e20fbe507723. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZ92X1901122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d5b9952978089490ac23b8db9c6817bdb41f012676879dfe213d37e6352f4e. 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/QZ92X1901123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928a8a47ad0304d6eafcf3109bd145d2ef98fa3b49756b8d9cbfb5c586b0e197. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/QZ92X1901124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b583f45fa8ead78bdc3ea12502a05bd561c795e462580ddb16433b2c994b553. 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/QZ92X1901125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d6133b665109c4f6f9dbf675f8a706c3097ea0920554521b33e20fbe507723. 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/QZ92X1901122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928a8a47ad0304d6eafcf3109bd145d2ef98fa3b49756b8d9cbfb5c586b0e197. 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/QZ92X1901124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adf37b56bb4230778ae950cb4dafe11f7eba9b9e40a1edcc3a8e7b2ff350860. 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/FR2X41652593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c5acf0efea241df4669f867f33a112e63d87c1639e65e3b6d1434a149c3d7d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR2X41652594.