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 0x51a06b0c464a9c156f314f8f26f8fd8c3202e79b75ff23bf4e2cb911645edc88. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cc8461c1-2a59-4ac0-8dc1-1da3268174db.json and https://artists.proofprofile.net/proofs/artist/cc8461c1-2a59-4ac0-8dc1-1da3268174db.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 0x674d3dff13125084a0106fd8ef8bfe3f585a38abc16c65c764e833f64ba67f2e. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/GBMJG1815276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3b653e75e2d0b3609591d8922da78a60438351a08013f7a218018200b4945f. 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/GBMJG1815280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee0f7a4f17f990aacd231ea40b9fc97b0d7ac6239e6e8e8aa6f5238530c9b10. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/GBMJG1908633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c282ecb6a1e97ba44bb8045d62e19bfea3d84cb9ce90ef4fa15682ea63c16a. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GBMJG1908635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b51e104c52b39b1c15301764b6025d70d9d69a25c6f237618d91fbfad43f0d. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GBMJG1908636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1e144560a6f05a40c2807e386c16d990f93649c39a6a0c88f90cf63fb38974. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAFU2123715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f14d18acfb6e55e6a3cb1abd15d3e34f88030f09ca826bb884f26627b7a241e. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:36:26Z), 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/TCAFU2123829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344c8e4e9694cc615c6b76478786193c57cb092cd23f99a53ea533f41f05b3e3. Chain 2 (Bitcoin): anchored in block 957730 (2026-07-12T16:41:26Z), 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/TCAFU2123832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40adfed55e8ea2ffeb170c29aeecc04c7c5630bbf6a55280ca86db55bf0d584b. 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/TCAFZ2298598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e5a6f3392ba326d24f0837fe8fa8783738f00ae3c0590620ceb3fcc4506360. 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/TCAGO2290116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed41608afe8756f38e545887a63b80a4be68862761ff793050752e4760a1935a. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T05:47:51Z), 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/TCAHM2362892.