Matthew Ryan "Matt" McGinley (born February 24, 1983) is an American musician and drummer, best known as the co-founder and drummer of Gym Class Heroes and a contributing music producer to the nationa
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 0x5cd6ff01d97b482fd4df66235ddec5e738ced7e45bd475f2428f549fd36d6f13. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1f49898-d617-47d5-aa99-ccac14ef71f8.json and https://artists.proofprofile.net/proofs/artist/b1f49898-d617-47d5-aa99-ccac14ef71f8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Two Agents: End Credits (From "the Trojan Horse Affair")
Music for Radio (Songs from This American Life)
Music for Radio II (Songs from This American Life)
Music for Radio III (Songs from This American Life)