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Documentation Index

Fetch the complete documentation index at: https://docs.qbtc.net/llms.txt

Use this file to discover all available pages before exploring further.

Terms used throughout the QBTC documentation.
  • bifrost — Per-validator sidecar daemon that watches a Bitcoin full node and gossips signed blocks to peers via LibP2P.
  • Claim — A QBTC entitlement tied 1:1 to a live Bitcoin UTXO in the chain’s claim mirror. Exercisable by the holder of the corresponding BTC private key via a ZK proof.
  • Claim mirror — The set of all outstanding QBTC entitlements, each tied to a currently-live Bitcoin UTXO. Tracks Bitcoin’s UTXO set continuously.
  • CometBFT — The BFT consensus engine used by Cosmos chains. QBTC uses a forked CometBFT with ML-DSA signatures.
  • Cosmos SDK — The framework QBTC is built on. Provides standard modules for staking, governance, IBC, and others.
  • CRQC — Cryptographically-Relevant Quantum Computer. A quantum computer capable of breaking 256-bit elliptic-curve cryptography in practical time.
  • ebifrost — The “enshrined bifrost.” The in-chain module that aggregates validator attestations on Bitcoin blocks and ingests them into QBTC state.
  • ECDSA — Elliptic Curve Digital Signature Algorithm. Bitcoin’s signature scheme. Quantum-vulnerable.
  • EmissionCurve — A constant in constants/constants.go controlling how fast the Reserve Module is drawn down per block to validators. Set to 5.
  • EntitledAmount — The remaining QBTC claim amount for a given UTXO. Set at ingestion. Decremented to 0 after claim.
  • FIPS 204 — The NIST standard for ML-DSA, published 2024.
  • Explorer — The canonical QBTC block explorer at explorer.qbtc.net. Lookup for transactions, blocks, addresses, and claim activity on QBTC.
  • Hash160 — The 20-byte hash (RIPEMD-160 of SHA-256) of a Bitcoin public key. Encodes a Bitcoin address.
  • Indexer — The QBTC risk indexer at indexer.qbtc.net. Aggregate stats on Bitcoin’s quantum-vulnerable UTXO surface, broken down by script type (P2PK, reused P2PKH/P2WPKH, P2SH/P2WSH, etc.).
  • ML-DSA — Module-Lattice-Based Digital Signature Algorithm. NIST-standardized lattice signature scheme. Formerly CRYSTALS-Dilithium. QBTC’s consensus signature scheme.
  • P2PK — Pay-to-Public-Key. An early Bitcoin output format that places the public key directly on-chain. Quantum-vulnerable.
  • P2PKH / P2WPKH — Pay-to-Public-Key-Hash. Modern Bitcoin output formats that store only the hash of the public key. Quantum-resistant until spent.
  • PLONK — A zero-knowledge SNARK proof system. QBTC’s claim circuit is a PLONK circuit.
  • proof-service — A standalone HTTP service that generates ZK claim proofs on behalf of users.
  • Q-day — The day on which a CRQC capable of breaking Bitcoin’s ECDSA becomes operational.
  • Quantum-safe wallet — A wallet that can construct a QBTC claim proof and sign QBTC transactions with ML-DSA keys.
  • Reserve Module — A module account on the QBTC chain that funds validator emission. Has one inflow (governance reclamation of dormant exposed-key BTC UTXOs mints QBTC into the Reserve) and one outflow (per-block release to validators via x/distribution).
  • Seedless wallet — A self-custody wallet that does not require the user to back up a 12- or 24-word seed phrase. Typically built on threshold-signature (MPC) schemes that split a key across multiple devices or co-signers, so no single device holds a recoverable seed.
  • Shor’s algorithm — A quantum algorithm that solves the discrete logarithm problem efficiently. Breaks Bitcoin’s ECDSA signatures (given a CRQC).
  • UTXO — Unspent Transaction Output. The unit of Bitcoin balance. QBTC mirrors Bitcoin’s UTXO set.
  • utxo-indexer — A CLI tool that crawls a Bitcoin node and produces the genesis UTXO snapshot file.
  • zkprover — A CLI tool for generating QBTC claim proofs locally.
  • ZK proof — Zero-knowledge proof. A cryptographic proof that reveals only the validity of a stated claim, not the supporting data.
Last modified on May 25, 2026