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 0x34585e971a83911d3b2e60db3b460173c973f239ecb05e7edc97b84365bad33e. 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/417a585b-5c83-4ac5-ada9-59f026f763b7.json and https://artists.proofprofile.net/proofs/artist/417a585b-5c83-4ac5-ada9-59f026f763b7.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 0x278af7963e12b89c337ae0cef1d979f1bbf31b6a41992a6eae0e58d4e57d65d4. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/TCAHU2413484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3d1edca582ae6ab1c8ead9b7d21e1779fab84389fb5715f0f1821d16d937a8. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/TCAHU2413309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbaffec98f26bca85859aca23c03082e6003fccb353992753e09abc92209247. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/TCAHU2413316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d91fcef229d8059ac768fd2eabda7bdeddb25e157f3d4409eadec382926ecaa. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAHU2413324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0584390f941bd5a71dfe5451ee8e474271d32545991b164b71e3c5e3beb39af8. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/TCAHU2413336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1ea6f8a0e89ef71bd66b8e52ef62e5dcf0acccf901e4a67849acf2e8cae25a. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCAHU2413344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146c7588d2a160d4731d8e8f6095dad1d4730165d2adc51714452afab8b05aca. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAHU2413346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7091555cfaf81bad98d55b23d15023ce1e670686b923367fa18a6c94bc41b780. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/TCAHU2413359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cb5f2f3c96c5dcc186fef4773ff4293119b1307ff04543b7faca08fbce526a. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/TCAHU2431912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf7eab5ae8120311a2a09f1923a1a975dd201b4a3f051d54b0156025f3a7546. 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/TCAHU2431919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1715dafdbc0adc15f1b7421658c218b31141765b205250f615dbaaee8e48ef5. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/TCAHU2431932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e1d58c560224d2f3c1c628b721ef2cbd795fd66ae84e2fc2569b39eaa7fdec. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/TCAHU2431942.