The Missoula Children's Theatre (MCT) is a touring children's theater program that travels across the United States and internationally, casting local youths in performances of original plays based on
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 0xb5103be9af95e3cd5f674fe4e446bb4c9b2c5085760cf406b9025a49fc8a6526. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/adec43cb-1189-4af1-a439-d3b7f2ae4fb5.json and https://artists.proofprofile.net/proofs/artist/adec43cb-1189-4af1-a439-d3b7f2ae4fb5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Missoula Children's Theatre Greatest Hits, Vol. I
Missoula Children's Theatre Greatest Hits, Vol. III
Missoula Children's Theatre Greatest Hits, Vol. II
Missoula Children's Theatre Greatest Hits, Vol. IV