Mark & the Escorts was an American rock and roll band from Los Angeles, California. Career The band formed in 1963, at first playing instrumental surf guitar songs such as “Wipe Out," “Pipeline,” and
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 0x43ea512fc19cf4930b6d17a4fe3ad936e89b790616b3e03ea7f0d5c9134ca577. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55b3189e-3d12-4c91-894e-5f6d40f31b78.json and https://artists.proofprofile.net/proofs/artist/55b3189e-3d12-4c91-894e-5f6d40f31b78.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).