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 0xe88393717db51177792d26ab1447c458bf298e2ab777865ec5a44fd91701d9c4. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/25c5c4d0-8663-4f02-88fd-1985e18898be.json and https://artists.proofprofile.net/proofs/artist/25c5c4d0-8663-4f02-88fd-1985e18898be.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
21 Questions (Originally Performed by 50 Cent) [Instrumental 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7967bf85ebfb210ed0dbf1853baf00658c2aaff9903e9f0da799b343aa34893. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USQY51769493.
I Do... Wanna Get Next to You (Originally Performed by 3LW feat. P Diddy & Loon) [Instrumental Version]
Wankasta (Originally Performed by 50 Cent) [Instrumental Version]
Changes (Originally Performed by 2Pac) [Instrumental Version]
Damn (Originally Performed by Youngbloodz feat. Lil' Jon) [Instrumental Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77918eb5a99dca3f18aed4fa8d6dd249883c3d6d6cafcf23f5b2cb5f63cdca7b. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/USQY51769487.
Often (Originally Performed by The Weekend) - Single [Instrumental Version]
Happy (From Despicable Me 2) [Originally Performed by Pharrell Williams] [Instrumental Version]
Where Are You Now (Originally Performed by Skrillex and Diplo feat. Justin Bieber) [Instrumental Version]
Everyday. (Originally Performed by A$AP Rocky feat. Rod Stewart, Miguel, and Mark Ronson) [Instrumental Version]