The 2014 King Fire was a large wildfire in El Dorado County, California, which burned primarily in the Eldorado National Forest. The wildfire started on September 13, 2014, near Pollock Pines, Califo
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 0x640925929f6e5cf1aea7391e3253d47c5f8ecf1b22dc95471a0c929ba65a9b7e. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c16c26a3-8ab5-424c-a0a6-608d7d1ef515.json and https://artists.proofprofile.net/proofs/artist/c16c26a3-8ab5-424c-a0a6-608d7d1ef515.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).