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 0xc6d6f01e66708d093d891d2c605f20ca3a83efdf530a728333ed427bdb3fe018. 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/a652fd22-e457-4087-a878-0bc957195e7e.json and https://artists.proofprofile.net/proofs/artist/a652fd22-e457-4087-a878-0bc957195e7e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0xede468162bec8cc788248039868034bc048ac62a95d181cd4a7d13162b33c945. 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/GBSMU0032424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c025abb9f5f55845a49fa2ca2bd928a390344e5387053f9554d7eab5d9c9ec6. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/GBSMU0032425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f99f280690e716f44fc86c26cb3284b1389f3960439f46365202137f32c62bf. 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/GBSMU0032426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e216e7bfa042640c7caa2677107cfc0a5a6f6c40f7f318f5dd6756296fdb56. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:11:55Z), 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/GBSMU0032427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a18de3a98ada751c2c889e8bf60e23b2e9d6a25f47c871ac20c87fdddb8ebb. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/GBSMU0032430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8639027e240e541d18ce133637a7208dc0c4d4ae79463126cc821147db784bf. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBSMU0032431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11187951a1d247b832eaa28d709353dac44a8369ccee4ca9840bcdf8cc3ec463. 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/GBSMU0032432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4845898f6169ae5547f53416f6ed484f94b5bb3daf15712ec91a26388ef67cef. 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/GBSMU0032433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e705d9471b4f40270cceb7ea8ccb7cf15636c779aaf2f0b1a8dd15ac6c85cb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBSMU0032437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa761ca5290558c93083d9c7f5a13ceb40d7075cf19ed15783d130b912208f95. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/GBSMU0030590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba5f139371e91815658671a3f98cf70e9139f231e8d41e2488ec159c500ec03. 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/GBSMU0032448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f94632bc079b7079da1d14e60e9726a0b11cc3837bdebefb18a35bb093f7909. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GBSMU0032450.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4727b2c65e5d7ca95a96da02abf49293996755b4efd5f46dc9cf5a8ce6d77c01. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBSMU0032451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db42a4ee37ea398132c89b2aee991534fb4ba07ecc0fbbc00b5c6dbe5479592. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:17:17Z), 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/GBSMU0032452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36d5ca9b63d3e464b20898e404a8d810d520c53cff37d22f3c0c2fc2ee76901. 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/GBSMU0032453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28afecbcaffa159990a8b34351414b23ceb17fae842def292ab835427e8532a9. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:02:24Z), 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/GBSMU0032455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c005cd0eb464d10abf7087e867fb0740a19936d4e9181a52a6190c48329a1f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBSMU0032459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470a95e89372526adf442b619166feb920039f3fbde21b4661ed891ebebe7aac. 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/GBSMU0032476.