Nossen (; , ) is a town in the district of Meissen, in Saxony, Germany. It is located 80 km southeast of Leipzig. The town is dominated by a large Renaissance castle. Nossen is best known for its prox
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 0x77f5713d47e0f47ae1bf8b5a07b5d06ac459313316803aa1a75f0419ca31d190. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/22306d9a-f2eb-4950-b573-66894854e327.json and https://artists.proofprofile.net/proofs/artist/22306d9a-f2eb-4950-b573-66894854e327.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).