Firs are evergreen coniferous trees belonging to the genus Abies () in the family Pinaceae. There are approximately 48–65 extant species, found on mountains throughout much of North and Central Americ
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 0x4983500c4084a2fc66a2d666960e9938e2ef417552d09e93f66f99864d5d6ef4. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/484dcd53-1822-4ccd-8d91-7f80c5538c20.json and https://artists.proofprofile.net/proofs/artist/484dcd53-1822-4ccd-8d91-7f80c5538c20.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).