Black Rose or Black Roses may refer to: Literature Black Rose (magazine), an anarchist magazine published in Boston during the 1970s and 1980s The Black Rose (novel), a 1945 historical novel by Tho
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 0x894d078e6fbe64de49b04fb37fe0ca4b6264442d3bae24ae884abbe178411032. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0f6dded-1ceb-4495-92af-f99b9f311948.json and https://artists.proofprofile.net/proofs/artist/b0f6dded-1ceb-4495-92af-f99b9f311948.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).