Tokio Hotel is a German pop rock band formed in 2001 by singer Bill Kaulitz, guitarist Tom Kaulitz, bassist Georg Listing, and drummer Gustav Schäfer. Starting from the foundation, the band's music ge
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 0x8431e54d674c748babb0062d95bbd2090450c70a9fa313696ad3a74fb216b41a. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aab7ee86-be89-4772-a9ea-ad3dc2899b4f.json and https://artists.proofprofile.net/proofs/artist/aab7ee86-be89-4772-a9ea-ad3dc2899b4f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).