"Du hast" () is a song by German metal band Rammstein. It was released as the second single from their second album Sehnsucht (1997). It has appeared on numerous soundtracks for films, most notably Th
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 0x6cc5f58a2de95fe43d71c1cf49e404922d96239e243d7b150317b80aa418e611. Chain 2 (Bitcoin): anchored in block 953954 (2026-06-16T14:18:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2529d1c8-d65b-4202-b9bf-be40f21ef525.json and https://artists.proofprofile.net/proofs/artist/2529d1c8-d65b-4202-b9bf-be40f21ef525.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).