Wietze () is a municipality in the district of Celle, in Lower Saxony, Germany. It lies at the confluence of the Aller River and its tributary, the Wietze, approximately west of Celle. It is the site
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 0xe587ee1c460ed323a785b78ce9b83cac5a5e598a59cd06d8d4062b4454d6ac39. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5a4ef1f-fd53-4856-b392-9c4ca0d7f354.json and https://artists.proofprofile.net/proofs/artist/c5a4ef1f-fd53-4856-b392-9c4ca0d7f354.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).