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 0x2b30dcb4c243f3a789a7ffccb0850c83cbc432ca5c2cab949eab3b380bf7cc87. 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/1ec6d29d-5b10-4328-815e-653c3bd4b049.json and https://artists.proofprofile.net/proofs/artist/1ec6d29d-5b10-4328-815e-653c3bd4b049.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 0xb73f75ca525a4e0d3e51688cc312b6fd02bc4b46fb40d66094e5286a6dca4ffa. 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/US3DF2414059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c0821430fb893e146ee498b01f54d2a12dfe3014af5de9f42c9a157f3603e5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE5BU2488550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedea3391aa34afee49232aa2564cd3d013f4facd245cee01c0c088409cb35b2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US3DF2453604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d804d2caa437e7af80f71ec8e281dd075beb8828ae3ad090ba6b8d206f3e01. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:58:28Z), 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/SE6I32448564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d43770c3297156bcffbacc2c401d1264f771f3cbe084d4edb90ba7370716163. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/SE6I32425992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa00e3feb44d9932a9e1a811bbbbd5b9fc31e0c0a14ce2569d77693a21e9650. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USANG2441430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2743acb4a337f2d965b7ebf1b60877bcf58b850a1a2d194172a200c854a61766. 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/QM3DF2404805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33303d9323f2e19ea160a510b43d0514e0121519157ab3c5c6b97663f20b96ac. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/SE5BU2509793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c0821430fb893e146ee498b01f54d2a12dfe3014af5de9f42c9a157f3603e5. 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/SE5BU2488550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009f721fd3ef74cb02b0a386a80d479b97a1b0c2b32c62747f0a9f74ba63a2a8. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/US3DF2515356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301d63e74af1de587fb4a99b07512cf7c6c637b99252c6654181913512b15a67. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:37:35Z), 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/US3DF2515357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb97b362488979229cb2dbcc1c9d861970d13f9839ebc2287444a4cf62d38a6. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/US3DF2526387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ee3b1abad5975938669e5f0ef8cd649badaffac736e33d1c3bf06ff9240b96. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/SE6XX2546633.