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 0x78cfddf518020f2e0192823cfedfcbc947a4d49f47bf373b99e2948936b180fc. 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/8877d169-71d7-443b-a668-8136317d1b33.json and https://artists.proofprofile.net/proofs/artist/8877d169-71d7-443b-a668-8136317d1b33.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 0xaca522b8473cc5a28c6ee2200c4601b9bf1ed3bc7941df4471610155723568a2. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:24:55Z), 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/QZTB22287257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00eab8d9c8ef83c24c4b131f640a6a4b5124f23dfe5ad12394e132bee25d029b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTB32237704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eca4f2a319bb9592be761225e5f61f79ece85bbbba788106d0399c6519bae51. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:07:52Z), 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/QZTB32237705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ad99e8f916b3d669a195fa701c6108530634e52b219b4660a0b297a74ce3bb. 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/QZTB32237706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57ec2c62278cb30a4d3f2ed01411291c8852fb25005ac7615404a5e0630ae06. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZTB32237707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ba1902efe801056a085213907f816eac5bc46079528fab60a5908d555f78a5. 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/QZTB22287262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646b972542c3abca8854269fa4f9c6d45c9df7220f6133a03c9ace0e5fb570a0. 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/QZTBA2235471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec6075e3b5f543d94dc7519dde14196bfa2dd9d0c4fcab48ad51685f96a6658. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZDA42384911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f8c593272fe897ac1b65e7d6ef640efd895644c67908851ab56301e774dfbd. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZDA42384912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea35982429e421513a152513110c683a9bd9c44e16b4914274a90106616a59fb. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZDA42384913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5f0159fcf689efe58b85bc5828e13802e3d31abb7a8bd61f1efb7ee7f21b4e. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZDA42384914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97018609d9a3857b35828819c1220946ef70a01fb943097ee7b4fdd69d2873a5. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZDA42384915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed22e13783b1f66eddeecf1d2236e59c9d2a05882420784e2170ef60a758923c. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:09:54Z), 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/QZK6M2476938.