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 0x06882e437b5ad1f070bd264c7c1ebbc2c84f7c9171bc34bc841d7f4ee684345e. 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/0649bc0d-6a51-48a0-b584-57edf6fcac4c.json and https://artists.proofprofile.net/proofs/artist/0649bc0d-6a51-48a0-b584-57edf6fcac4c.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 0x667c32ad7faa8a6115bff731c7185ab58f5afd9d19dfad6a73fcd2067d55b13c. 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/ESA011853025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb38aa6cf5ece30bce2902d353d4db88c72ea26869f9a6012795240d99fc64b. 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/TCAEK1950129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0285501083a4f15e1b30a272374ae56cc4885672eda1996ad51e5f61a5c0fbb. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FRX452118532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0468e8f48a1dc226e3e9aaea638fc0f7b7a153b62fc4f69c2863e709332a801f. 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/FRX452118533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb415feabbaf00eb31cea6f7a070f1bf84eefc48d53bae54af5e9d5efa0c64114. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/FRX452118534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e9683f9504bd6155b31137434620f75e8c87bb86ee98eb599c00cb481bcbc1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:53:22Z), 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/FRX452118535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd69b9e5d4b8fe50723b48f3570528657599f561d1405c0c68c867d25c9792b6. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/FRX452118536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc17079b6d32b93c5baca1748731e915c133ba79e7ad14c33906c89b7f1063ea. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FRX452118537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326923450289e690cd8acd6b283657bfc450484ade39294bcc9285c1decb3b8c. 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/FRX452118538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bfcca60ec0072c1d437ea5e9c261362dd424fcf62642627f7b9e175094fc99. 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/FRX452118539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3628ed27b0e94bfec016cc30dafb43b16ef4546d009e4213eb34cf021a23b86c. 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/FRX452118540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdace4f14df1bac8e47f39be7daa916269850a1d5a094136a7c4287e9143a53e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRX452118541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2dcf33828e87a8468c186f3afd883909eee39b5195f9f4e34078d625b99e4a5. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:09:10Z), 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/FRX452118542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64012401203d38005303fa1f40541831a176a7a9cfc56871ad48a7d57437e96b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/FRX452118543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4110bb87f6c43f1c7fbe57c8d0ffde143a9b08bd6d1c3866294a30c885755f59. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX282220297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c8a45882de52c1aba28be735e737000f3140614367663006f11668ba6fa015. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAFH2032254.