Belum is a municipality in the district of Cuxhaven, in Lower Saxony, Germany. History Belum belonged to the Prince-Archbishopric of Bremen. In the mid-16th century the inhabitants adopted Lutherani
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 0x37bb0dc72e475bf5c81a9d81cfbe615a0fd54b803f5fe08317399f07fd380f6f. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac7c222c-e3e2-43e7-b8cd-8079036c2e88.json and https://artists.proofprofile.net/proofs/artist/ac7c222c-e3e2-43e7-b8cd-8079036c2e88.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).