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 0x5df573899559cc1ad55eec052ce4ec4848c3d35ff7e23d39fc890b4991b8bcaa. 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/687030ae-640b-4d7b-af85-86c664981477.json and https://artists.proofprofile.net/proofs/artist/687030ae-640b-4d7b-af85-86c664981477.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 0x6b4857f726ffc25de75f76b650ff29eddf8a853b984347847607e43d79c9e505. 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/GX8LD2348594.
Hotline Bling (Billie Ver.) [Instrumental Ending Loop]
Crazy Girls (Sped up) [Said he likes crazy girls]
Reminder (Got a sweet Asian chick she go low mane) [Sped Up + Distortion]
Heartburn (Sped Up) [Tell me why does my heart burn this way]
No Bitch (We Don't Give A Fuck About No Bitch) [Sped Up]
Company (Sped Up) [May Be We Can Be Each Other's Company]
Black Beatles X Black Barbier (I Sent Flowers But You Said You Didn't Receive 'Em)
But I Think I'm Liking Her More (Vixen In Calabasas)