Dulcamara means "bittersweet" (literally "sweet-bitter"). It can refer to: Solanum dulcamara, a plant Dulcamara, a synonym and proposed section of the genus Solanum Dulcamara, or the Little Duck an
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 0x2dc0740716832cc0a51b84cfbe3179ae18d8e11d0dd4b6de0ede164eefbf76d1. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c74298ca-e0f3-429d-bcff-19e1951af343.json and https://artists.proofprofile.net/proofs/artist/c74298ca-e0f3-429d-bcff-19e1951af343.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).