thumb|right|alt=Female WAVE officer sitting at her desk in dress blue uniform |Captain Mildred H. McAfee was the first director of the WAVES (1942–1945). The photo was taken in 1942 or 1943, when she
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 0xf7a3469771729f35a1cababe3bb4d8c7bf17ca303b232a965a78d442987fc651. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/25a2fe22-19e8-419b-b7b5-345c6a2c1659.json and https://artists.proofprofile.net/proofs/artist/25a2fe22-19e8-419b-b7b5-345c6a2c1659.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).