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 0x0afc012ab2abe9bf021f38335ecffe736dadd64c00d63c4db2c36ef14199aa51. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c41fd1a3-810d-451f-b8ea-a46fcb286f31.json and https://artists.proofprofile.net/proofs/artist/c41fd1a3-810d-451f-b8ea-a46fcb286f31.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 0x827fd699b72d1eca5ec97c10019232ece91d3737cc66f812ae83e37d03fbc4c9. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:13:45Z), 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/QZHNA2013147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655d339a8569eadd518bead91b6db8d7606cb68895c880a34f882bdab38a9965. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZHNA2013149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386ccb5f8f87969336d45673ac4a31aea2529b98a74b165ce22bbe052db50e86. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZHNA2013151.
Love, Life, Experiences, Vol. 2: Driving to Purpose
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd117d3ea0f9df07924d7f75a3066a30dba96a033d7f44315af73607423cae705. 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/QZ3V21800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fe9dc71f8d5db283ee3105a8baa85fd055ee64ec043cd35e89c467eed44d2a. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:04:13Z), 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/QZ3V21600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2b8b3f20d6a8a20e4eb44e2a92a35c1dfd942a630c9e47b86817297f99fc44. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZ3V21800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2207b7613a058af0ef5f2d8eb2f08e0716d9242a38f9f1658c42d229894a950e. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:28:43Z), 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/QZ3V21900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d8fc55c5c01d800b805182c018a1d2ddfa53e9c06f5801599e560530129438. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USTD91115233.
Love, Life, Experiences, Vol. 3: Conversation Piece
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed07b71c5fb4caf9b70e812351271af05610ffdb40beda9e4dcd432ce2634c7a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZ3V22300044.