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 0x42893d2cc12d13ad42dc377fe235532d638888fd33396c68f70ac62b99a3bfc4. 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/3d85d481-8974-47c1-9b11-f86f8169d8b2.json and https://artists.proofprofile.net/proofs/artist/3d85d481-8974-47c1-9b11-f86f8169d8b2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Castro Kartel Lets Go (feat. Genius) - Single
Murda (feat. Nucklez Castro & Prettboy Paperz) - Single
Watching You Grow (feat. Nucklez Castro & Prettyboy Paperz) - Single
Watt Ever You Want (feat. Ghandi Quigs) - Single
Badman (feat. Bless & Jay Rocc) - Single
Groupies (feat. Backdraft & Fatchops) - Single
The Perfect One (feat. El Darawdough & Lorenzo) - Single
Snakes (feat. Nucklez Castro & Jay Rocc) - Single
Sunshine (feat. Sonny Thompson) - Single
All the Way Up (feat. Genius & Backdraft) - Single
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 0x62097bc2c0331b2c5445e7277477ad2d74be205a60b06f47c3828a04bafc5c9c. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USUYG1531251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c66adffea54bfeb5449f99f0b3cbf550c24f66ad6e3e3fb6294b0028ba18c5b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USUYG1529223.