The Dachshund, also known as the or , is a German breed of short-legged, long-bodied dog of hound type. It may be smooth-haired, wire-haired, or long-haired, in various colors. It was bred to scent
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 0xb0653687b5696a37134e2db9f6e56899a1211d20077c134222fe2cfcf45bf1cb. Chain 2 (Bitcoin): anchored in block 954038 (2026-06-17T02:57:22Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3dcaa977-cd6e-4539-b647-7dc78774e0d6.json and https://artists.proofprofile.net/proofs/artist/3dcaa977-cd6e-4539-b647-7dc78774e0d6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).