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 0xcc6bc7b23b7da8b5e5c0e6338459ad4dba5857c2945fa22989d2fa145b350f47. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b03fab8a-533a-4c0e-8ba8-2168076f4b63.json and https://artists.proofprofile.net/proofs/artist/b03fab8a-533a-4c0e-8ba8-2168076f4b63.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 0xef95db5d031d4320cd535098ab1b8d8c3fe6eeddd4c1ffa701f5a7aa050a9cc5. 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/TCAJP2567214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b54a4a9a33d98004f85f4bc303ccc3f5f20e1bf7164057f93a8dbc869db6c06. 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/TCAJP2567218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa413ddf9a91e251f157678f232624b5e3cdd0161882d83ceda386f0f7e5ef63b. 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/TCAJP2567219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c556c08fd6cd0a457d8aaac4dc0d06d2e0b4266e9fa63f07c5de38011bf069e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAJO2567224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb1439a78f74f2fa76472bd9788d66ac20c21f0aae3bbb7747409b5b4eeee2a. 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/TCAJO2567227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4a82885e35147dbe93ef867bcb778ec77d175a1cf5c668af5064e341416898. Chain 2 (Bitcoin): anchored in block 958635 (2026-07-19T00:58:42Z), 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/TCAJO2567229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7acd1533941b15db2a71410031cf1546cdfac4fb122bc09042af4ba5be0841a5. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/TCAJO2567231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848fab775d4f495dc29759826c5ee386d39bd04e2fcf1279fd1a6dc1c2ca7758. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCAJO2567233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35fb9b95e1b6bf97154e59f4e84c2aeb9c5cf9e9b2031b2d2a6b5412c3bd143. 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/TCAJO2567237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d6e1f7c5ccd044784ceeebf8c54be312efb6f632eaa1f0395274ab93798e84. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCAJO2567238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237cea3dccd3480a5f6fc52b8bea2538efe1d42aa9cdc10e2bbae1dab65b053d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCAJQ2536169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63385a824365b842a9e93d5747878b65950b40eb845830a1d1d87b52f9a90ff. 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/TCAJP2536176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa9297034bf8e3dd09fbbbc906abea65e7b59c8fcab713b2d3fd22d9c3c2a93. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/TCAJP2536180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e45d1bebd2e88d35fe7a4127a8457d59d9c0c48c1ae0b2b42e941b610eac06. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/TCAJP2536184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5dd2be59bd273bd4de8939a175be8f85e442cab609109996916ff818c1341e2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAJP2536186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a3fa568c61aa14e6ca222c302c46b2fcd526803163363c164e9a6f628bece3. 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/TCAJP2536191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749c6519fe28877447a40b3f137d695480e83b72ac2b165328321db715e0ec8a. 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/TCAJP2536198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724df025fca5c069eaa3a89fcb1ba511995a5c4cb55c966763f4921264dc5420. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/TCAJP2536202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37262b5da75d88564053b32f590c2065049e165a7608cff317f2f9cd25cde83a. 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/TCAJQ2536203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb465ffef05dc966f21cfad1a779a900c50b8a08d819286c7652ea4bc5a363d00. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCAJP2536205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d0f6b58b0a69580029de70fd748a6d00b1a135f8e8225bc5a62af96b6e1052. 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/TCAJP2536214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a3ad0189ee63108e30b529a45a898057e5f64347040748911f527ddc00d810. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/TCAJP2536215.