Alem is a village in the Dutch province of Gelderland. It is a part of the municipality of Maasdriel, and lies about 10 km north of 's-Hertogenbosch. It used to part of the province in North Brabant.
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 0x5663c93f50a060a3525e4fb15eb1752f525ac6758ea29a4bc980ac50723b90c2. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f450d881-1c4b-4365-bde7-bd025e836342.json and https://artists.proofprofile.net/proofs/artist/f450d881-1c4b-4365-bde7-bd025e836342.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).