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 0x793b2c448d87486a2cf476debc796f3cdb34a7a0c820d28b44195ddaf72eef66. 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/5516fd63-7e98-4d06-876c-32e529ab3511.json and https://artists.proofprofile.net/proofs/artist/5516fd63-7e98-4d06-876c-32e529ab3511.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 0xfb54665d48acdb85aefedc3e53e9715ea493050ce3ad6a6a55b8bb3e8d06c631. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZFZ42435795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92785efae14c8a62d84183ba7e01d63cbaa4c8f31fd577092e3abc54f0df259. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZK6G2400349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5c3477f7a231f3af65af7a06da98c41abf3110eac2952e7ea1b4078eb6d452. 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/QZK6G2400350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a84ebd70b7eaec9c720df69a6c610ca595be1ade169672be898e0d88385a135. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZK6G2400351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb356198a5b9aea364935073a20e36a5474af11428a03cd6115798891fce26dac. 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/QZK6G2400352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6b840f65722aa46765bb2d1e88cda0fdff4be1aa7e8791c090c44a04c70a72. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZK6G2400353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0286c5811ef1494c3312bbac131ad5b03663c102f1e8596110220fd5a24c1f. 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/QZK6G2400355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ecd6ad9315cddcd9e7ffbb2953b4c1c631e8ce470e230c9a5624db2b5feba1a. 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/QZK6G2400357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76acff83fa277eaf52ce4a22d39f30c03e1bb892d62d3d7af6c9d98497f711f8. 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/QZK6G2404352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167276d824487e1257ecb05623d56e40e181e6f8ffa57c48012829fdec358fb3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZK6G2404357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be3cb4404d9203088859a7816e51e8c6ba1bd248addab3ad77d290e8aa0efe4. 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/QZK6G2404358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a0360220f4b44050802ea8327808119bd5326004c1ed89a0f8ea2ca1a7c7d3. 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/QZK6G2404359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec516187d77e09dca6e66278951f9d1544f2ed2549c2bdcb84ffca878a51a3ce. 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/QZK6G2404360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd50d9caaaae67e756e08342e0f7a3a295a68c7d0fa2c3514d63a2e08dcf1d4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZK6G2404361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2843d8a20fa632b7d83044c88c858e43f58f61a29967b8721b43403621268f49. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZK6G2404362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08cad1f53fab9e03523ebe914addaed9fe36fd78ec9d1c7b0b336b88811f0eee. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZK6G2404364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947106e62061008075910e32b8d0d47b86e60b9d71813307835adcb2adcbd3ca. 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/QZK6G2404365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967bb1877a4ec451dd389377765e117ba60cf1e84d4411c01c73bf756170cc74. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZK6G2404366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd16526274218aee23b4f9797a6fee0a4c3ce1a882cecfe7dbccdb6976be2a30. 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/QZHN82503764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3375e8354b19265b3f2e2cbfad84dfc8f0fd142f802d9f3c88e72e68a0594993. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN82500117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51522daa81cd19889e28d0ae4d3b0e3b192f5bed1fd5596da6f5b8b4eba2b639. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN82504910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff7212d66943b2f73a3bf5074d0e75256d57cee8fc8b3b1f81098da1ec2b592. 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/QZHN82504907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dfdde6253a3e04146f3e3b219d491aa6b4bbd64b77e0eeef32ff9689c124df. 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/QZHN82500113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86c27def1ecaa06c051e7c209693884d5f541896bbd340a15c76d4e2125bb8a. 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/QZHN82503759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1167c130d1dee06b38ea70b8767841a45216bc01e20ec19be753d6971e0acfab. 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/QZHN72597605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc5faa16c0b1181203808c5656617ba1cce6857ac8c352c23d395804af5f3fb. 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/QZHN72598673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413adad91169aff7cd4eb27318313648a0f4856ce8783f931e87bb83481ee6e1. 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/QZHN82501704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96458be25c6d2c61f941baa05b737bc3eb8aec03adca76816603ca3b80ee982f. 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/QZHN82503785.