Samuel Magill was the second mayor of Cumberland, Maryland from 1823 to 1824. In 1812, Magill established one of the first newspapers in Cumberland, the Allegany Freeman, whose editorial stance suppo
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 0xaf61189a3894471179adac33af26a9ecfaac2f115279d714da2ef90f56eb3b89. 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/cd1d27cb-738d-4bd9-8982-e3b21f678fa4.json and https://artists.proofprofile.net/proofs/artist/cd1d27cb-738d-4bd9-8982-e3b21f678fa4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).