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 0x816cd08d970f1851a4e7e2c9b28e745641987fc8b1d9c5c09225b2ae7c3b5aeb. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8479bb76-8ec6-447b-8c98-d54bb185d979.json and https://artists.proofprofile.net/proofs/artist/8479bb76-8ec6-447b-8c98-d54bb185d979.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Beatles - The Best Instrumental Versions Vol.1
Evanescence - The Best Instrumental Versions
Bohemian Rhapsody - Instrumental Cover Version
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 0xab2060a200726600aaecb29463a22241bbf23e3e32cfb68390ba373536993086. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/ITDD81804296.
Linkin Park - The Best Instrumental Versions
Aerosmith - The Best Instrumental Versions
Nirvana - The Best Instrumental Versions
Bon Jovi - The Best Instrumental Versions
Elton John - The Best Instrumental Versions
Green Day - The Best Instrumental Versions
David Bowie - The Best Instrumental Versions
Michael Jackson - The Best Instrumental Versions
The Cranberries - The Best Instrumental Versions
Christina Aguilera - The Best Instrumental Versions
Alanis Morissette - The Best Instrumental Versions
Backstreet Boys - The Best instrumental Versions
Duran Duran - The Best instrumental Versions
Madonna - The Best Instrumental Versions
Lacuna Coil - The Best Instrumental Versions
Rolling Stones - The Best Instrumental Versions
Iron Maiden - The Best Instrumental Versions
Darkness - The Best Instrumental Versions