DRS may refer to: Organisations Direct Rail Services, a British freight operating company Schweizer Radio DRS, the German language service of Swiss broadcaster SRG SSR SF DRS, former name of Schwe
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 0xe5b00e93dd08eed4092dac1cc8e2490422ff3ddddf9a5cc89f32d12109c9970b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/484e8ca5-cd03-4416-adf8-da8a78b9bdf9.json and https://artists.proofprofile.net/proofs/artist/484e8ca5-cd03-4416-adf8-da8a78b9bdf9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).