thumb|upright=1.5|Fresh lava from Fagradalsfjall volcano eruption in Iceland, 2023 Lava is molten or partially molten rock (magma) that has been expelled from the interior of a terrestrial planet (suc
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde93680caf4211cc92bfcdd4cf7e0310e36d60ddac027721a45eb04e48d174d2. Chain 2 (Bitcoin): anchored in block 954729 (2026-06-21T18:16:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fbcb7516-7db1-46cd-83a6-b824da3624db.json and https://artists.proofprofile.net/proofs/artist/fbcb7516-7db1-46cd-83a6-b824da3624db.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).