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 0xf701b7bf29022b80a468090d3d913e3a6aab54d4f6599df9582872f9f306f534. 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/b5b4e83c-7c79-4486-85cb-c44918feef0d.json and https://artists.proofprofile.net/proofs/artist/b5b4e83c-7c79-4486-85cb-c44918feef0d.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 0x3088f9e8edeb0a1925e82c5997feab30f89186fae307741a546c1999fc8bffaf. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/US39N2300919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43aa84c9aef15ec597eec11af1b43f61b5763220ee59983d985c5177a28a75f2. 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/USA2P2354895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddfda7d9411ac5fa713bebea052f56cc00c8ecd5920df078bfb0ba2eeb2d70e. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:35:32Z), 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/QZHN32436121.
opposite day (live & acoustic from the garden)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e6e6f441f5f4495a4a1cb865fe3e09f57acc4f0668014d67fc134ecdd8cd9b. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:50:13Z), 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/QZHN32439495.
I Barely Go Out Anymore (original voice note demo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574ac5afb3de86da29e9348d824a33a11fd89ba8a7c399b5421fb077d7642b8c. 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/QZTBA2465779.