Volcán Chingo is a stratovolcano on the border between Guatemala and El Salvador. The highest point on the Guatemala/ El Salvador border is Volcán Chingo at 5,823 feet. It is also known to be the seco
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 0x7200b554d608bd823a6e0cdd60abe56deda44433e767ef3cc8a2ada30a0ec7ac. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68088f94-0843-4348-a773-78c51879f42e.json and https://artists.proofprofile.net/proofs/artist/68088f94-0843-4348-a773-78c51879f42e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).