Aub () is a town in the district of Würzburg, in Bavaria, Germany, southeast of Würzburg and northwest of Rothenburg ob der Tauber, near the border of Baden-Württemberg. It is fed by the river Golla
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 0xe8029e4dcb93374cd5262c455744c9e190165606471600c0d0f6d72e99aede6c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68b650cd-920c-4b15-9250-0f66986faa85.json and https://artists.proofprofile.net/proofs/artist/68b650cd-920c-4b15-9250-0f66986faa85.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).