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 0xb09ab13dffdcdffa0032c54f133d74b66acacafecc2c51361df6044225044dd7. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f25f29e-befd-400c-9f44-78c5b345016b.json and https://artists.proofprofile.net/proofs/artist/8f25f29e-befd-400c-9f44-78c5b345016b.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 0xb2ca47d03007971eafa9cbfbfba3b24207cfc61960082c9e2127623cdfc5fa6c. 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/BRACT1600292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a90cf2eb020d5719b7b442f90078fc7f9c17cb395256111dc09dea1bf5d34a0. 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/BRACT1600294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa2f5883448a6ce37326f363245514ce2218c610e0b872d9b80f9c9ddd75aad. 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/BRACT1600295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5da48341628764c0435227fbe9b76a799bf398cfa4b90b047dddef2d2fd0e65. 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/BRACT1600296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec344c08da8e1358d101f5a0038e7279eee2d5837a68a18fa6bb3688eb24efde. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BRACT1600297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1237aa621130c93ac920442dd5aa53cfd29b11e43f4fc0ccf79fb9e135cec1b6. 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/BRACT1600298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef28ec1f485f0e903ed838af6998199f52ef4caf25d1d7adbca9c1f5069dfbe. 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/BRACT1600299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7067d520b9aa88891c2a22121c97579dde41322654a7423a3e1d2123681a5b56. 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/BRACT1600309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78d1c9268dace0d929c4fc71eb264aa7c9cb7bcc41cde7abb7d8419cb2bde2b. 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/BRACT1600311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae74a39a2985b391cc8ec6891de2f5576d6e79ab1ca42e606ab7c2086a130fee. 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/BRACT1600315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66faf9f0e3b8ae57640313bb1a0f8ebfa4a0105dc48be98f68b392fba94080d5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRACT1600317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6819f69dcf1bdea27f77413810231ed4bc1f5181697022a5f9c7a9410487940. 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/BRACT1600319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5cf9774d667d70e6e004d865f885fb7e94f25aa3e54ee9756a610cbbeadf3d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRACT1600323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa3b1e19f01b728c648ad846eb66159a43c4cb3638fd490055e940c4e08b5f0. 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/BRACT0500061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a13c4740fdd50608a1c813c0186703ce720224ec705a3697af91f5d16fe77c. 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/BRACT0500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8392a5500f43bb26b46973c66a75182102b6bcb86a7621df92d533550ba543. 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/BRACT0400589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef93c2a8030cfb86ead572c7a3cd4f9aa6126705e7ecba339a3b7830d05a8be. 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/BRILA0300646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d950cb67ac05b80b8e69da649424f81e49344df574e6d62a24a432a2f0fa290. 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/BRACT0300311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086231aef2a4aa0765a707d31d32d3929f3dcec77f15e833d6d2943a8d17c7af. 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/BRACT0500552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e54857d901a0d1a0b8a69a6d2d113aba730cd573c9c0f80e5c64d5659cc3e3. 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/BRVRI0500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a138b73c6447fae75c683de596462da1640aebef8c43df4516b1c5d72727ed. 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/BRILA0300762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6c1b08984d794bb799d5a01d144b989ba777a32b43ff1f389607209c1c3665. 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/BRILA9900158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fb320bb853d9e202c65f0613c2c462444cd0869125c16d55a0ed0590586cfa. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRESM0300351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09048ded42f7fecec910ab23a890ef9102bf885ec80dbe3b7eb523aa1e7096a5. 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/BRAPI0500832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2074ee2c1453aa8df2ca318e305b18f05b49acbeea290658830526d8fae4dc7b. 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/BRAPI0301043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c850cb6895b6e9359a53688cd73117d08532a9fdca4e4e362507d30a5df9c48. 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/BRACT1604378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb92a1513e661a8f02bdab9e459a7e18b7061677e28ba50b50b7935c6486e161. 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/BRACT1604380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb2472ca7f28e67ffbacdc919a0abe04988db67eb2c5034b4ce0d51696abdbe. 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/BRACT1603131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ca724fc37ac63d231faf8f4b9622719d47cbb9fa858976fa47a2132570f0ad. 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/BRACT1603132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a24b2f8ed8cf036af29942e1b6e9c2de0e1d0f9843acc11bdde57e32b288ce. 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/BRACT1603133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67cd74cd79cdab42b7bf5030399e05badc6a2e17b39a9b2d25b4fe36a69031e. 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/BRACT1603135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8f41f0e62eaad82b18f2f8338c5d1cd704fadd943a19ddb7636ff8cce5620d. 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/BRACT1603136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a1bfed26d97cc5370d93694708516b2bdaa9e7527fc6d609befa6e94856888. 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/BRACT1603137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73f0b92a5b8dc1df93a415c28729756c017d22ecadc76925de1099126c447a8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRACT1603139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc57ae9d43053dc5c1d726169ad055a059f709afffb12dbcbd04017ac83ecd0. 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/BRACT1603140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e511824c17f24e8d07959db9a23cc616424f2bebcdf7fd8856b44086c8d0552. 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/BRACT1603141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02b0f422e4520463c51aea57f5a1bd99fcc3457f98af3645df2cdfc3636be8d. 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/BRACT1603142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd4afcdc79943cf02239c29668eca9313131d6b72ee5183f6c93f1041f6d208. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BRACT1602753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870f3e6f0390ccf17bc2581f1a83d5927459a076ff003ef61412e4904adb22f8. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/BRACT1602755.