Hena may refer to: Hēna, a Sinhalese caste of washers Hena, Iran, a village in Fars Province, Iran Hëna (Albanian paganism), the Moon in Albanian ethnic religion Henna (Lawsonia inermis), a flowering
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 0x7bd2da16c8defb1d587938cd658ef620e26e8ce4dfe0fff08937c5c29d5a46a3. Chain 2 (Bitcoin): anchored in block 953885 (2026-06-16T04:12:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ca8f711-9bed-45a0-a140-bbc384dd3bd1.json and https://artists.proofprofile.net/proofs/artist/0ca8f711-9bed-45a0-a140-bbc384dd3bd1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).