Vandenberg may refer to: Vandenberg (surname), including a list of people with the name USNS General Hoyt S. Vandenberg (T-AGM-10), transport ship in the United States Navy, sank as an artificial r
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 0xc4416a65f6010484a81d281cc78b60f6f8d7910c502e1316ba3bab8a05ba7b1d. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c80b5d1d-06f0-4f5c-85ff-b0be310942be.json and https://artists.proofprofile.net/proofs/artist/c80b5d1d-06f0-4f5c-85ff-b0be310942be.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).