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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2be5c92cb4880c6cdc54ec25090d5d6ea08f61c860027e0de71c85b751b862. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/931e2ed5-195a-49c4-bfdb-a0335f140207.json and https://artists.proofprofile.net/proofs/artist/931e2ed5-195a-49c4-bfdb-a0335f140207.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
I Still Haven't Found What I'm Looking For (aus "The Voice of Germany 2024") [Live]
I Still Haven't Found What I'm Looking For (aus "The Voice of Germany 2024") - Live
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd65f32cff636088d5e8e8beb6c27d791560d521ab81fea4b719c3251f50bf18. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DETO32400445 — a six-check JSON result.
And I Am Telling You (aus "The Voice of Germany 2024") [Live]
And I Am Telling You (aus "The Voice of Germany 2024") - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13706ff67392969a78f30f9a9c0ec808b1492290368ed97de3ccea4c96bc503f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DETO32400554 — a six-check JSON result.
Purple Rain (aus "The Voice of Germany 2024") [Live]
Purple Rain (aus "The Voice of Germany 2024") - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25862223fcb8e69ed20edef0b9d4852dae9507d1fc624fef6a6cea6de0fe9f4f. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DETO32400593 — a six-check JSON result.