Greve may refer to: Places Greve (surname), includes a list of people with the name Grevë, a village in Albania Greve in Chianti, a town in Tuscany, Italy, at the center of the Chianti wine region
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 0x2259a42972dd842509e7e67c84bd0a09c3f6d7b7c3d0175dc8e0f99859ecd8ec. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/51d5dfa4-5cbb-4ebf-af38-3a54522ded7a.json and https://artists.proofprofile.net/proofs/artist/51d5dfa4-5cbb-4ebf-af38-3a54522ded7a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).