Christopher Brendan Ward IV, better known by the stage name MC Chris (stylized in all lower case), is an American rapper, voice actor, comedian, and writer. He is recognized for his high-pitched voice
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 0xfdbbf9980b46db5ddddf1c6bfbe21be46bc45c8a218b46c1b100f61fabe456c5. Chain 2 (Bitcoin): anchored in block 953915 (2026-06-16T08:36:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1a44798f-d4c6-4703-88f4-4d761c1c72ae.json and https://artists.proofprofile.net/proofs/artist/1a44798f-d4c6-4703-88f4-4d761c1c72ae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).