The Preluders were a pop girl group from Germany. The original group comprised singers Tertia Botha, Miriam Cani, Anh-Thu Doan, Rebecca Miro, and Anne Ross. Created through the ProSieben talent show P
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 0xae0a087fa4030d6d1c3275758bbe266b5b7acc630be868e60e32aee08b7e8bd6. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e6c5325a-7896-4bc9-beb3-220e1f9920ea.json and https://artists.proofprofile.net/proofs/artist/e6c5325a-7896-4bc9-beb3-220e1f9920ea.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).