Chrysanthemums ( ), sometimes abbreviated to mums or chrysanths, are perennial herbaceous flowering plants in the family Asteraceae that bloom in the autumn. They are native to East Asia and northeast
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 0x34734f40c731eb0140cdf9c1be3dd51c97d37945f656f1d4e4c504b54cc909e7. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a1c48ac2-4a76-4196-b92d-999c58da9b35.json and https://artists.proofprofile.net/proofs/artist/a1c48ac2-4a76-4196-b92d-999c58da9b35.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).