thumb|Almond blossom right|thumb|Cherry blossoms, Paris, full bloom In botany, blossoms are the flowers of stone fruit trees (genus Prunus) and of some other plants with a similar appearance that flow
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 0x1046f3d09bbd6b2962eee2d03d7bed48a58681d1154f8bfcbaa3ae8861e8b5c6. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06a6bcf7-921a-4278-82f7-ab8424fd4b8c.json and https://artists.proofprofile.net/proofs/artist/06a6bcf7-921a-4278-82f7-ab8424fd4b8c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).