The Whooliganz were an American 1990s hip hop music duo consisting of Scott Caan and Alan Maman (the latter of whom is known now as hip hop producer The Alchemist). The duo went by the names Mad Skill
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 0xb1d64fe61d409382ec9722ddbcecb18ab1c663f9861ad2b6e022d30b12c99e9c. 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/901360d5-9973-4084-82d2-4a728da63c5d.json and https://artists.proofprofile.net/proofs/artist/901360d5-9973-4084-82d2-4a728da63c5d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).