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 0x5e31b29f8ecace389d1039d3d74625a91020973138b298f56d02ee894e78a865. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7604c857-f871-47fc-9954-fd9923cce8d9.json and https://artists.proofprofile.net/proofs/artist/7604c857-f871-47fc-9954-fd9923cce8d9.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 0x091936af8a95b55667c85a81cc1e868ddc187ef916f430a50948e5bb7d2713db. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UK6AK1400284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b8d61be5982ea0a15ad00ee0f0c38d7f9ea934701d4a44b985ab02fed1f95a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLUV51200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fba9bda7847346e4fc2ca461c2b89c21079de5f13eb1c48f4db6f735d12e5d9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/UK6AK1400257.
Rainer Weichhold Pres. Sensation Weich, Vol. 4
We Should Bang - Monkey Safari Hells Bells Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f76f67ccf386cbb787197dc179c6b7e33edf2cf5cd19e70563dba69acfa47b7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEH741118240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f9b2cd8357d3c07fef043b2766f31599a098930b69dc2c043710dc274cd470. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UK6AK1400288.
Voltaire Music pres. The London Diary, Pt. 5
Voltaire Music Pres. Re:Generated Issue 1
Compounded, Vol. 1 (Underground Techno Selection)