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 0xf8d8f86ca2e72dbaeb890d322c652a301617538270be2d154182629cc91025ca. 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/64cfe906-51a0-42a2-a36e-cf7ab88c6e9b.json and https://artists.proofprofile.net/proofs/artist/64cfe906-51a0-42a2-a36e-cf7ab88c6e9b.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
The Moon Is A Harsh Mistress (Fra TV-Programmet "The Voice")
Wicked Game (Fra TV-Programmet "The Voice")
Wicked Game - Fra TV-Programmet "The Voice"
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 0x756accbed54b9b973caa1a716b4be202bf2d161de8603b0469683bf0729416bb. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/NOUM71900168 — a six-check JSON result.
Heaven Help The Child (Fra TV-Programmet "The Voice")
Brother Where Are You? (Fra TV-Programmet "The Voice")
I'm On Fire (Fra TV-Programmet "The Voice")
I'm On Fire - Fra TV-Programmet "The Voice"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0e11ebdd851e959fa89bd6f8c7ea8c39cdc1c4daefcdee0eadfd30781abbaf. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/NOUM71900354 — a six-check JSON result.
October 8 (Fra TV-Programmet "The Voice")