Overview
Introduction to the BTX protocol and node software.
ここに来た理由に合うワークフローから始める。
ドキュメントは幅広いです。この2つの導線が、新 microsite の背後にあるオペレーター向けとビルダー向けの中心材料へ直接連れていきます。
Current release: BTX v0.33.2
Upgrade before mainnet height 185,000. That block atomically activates MatMul v4.7 Profile 1 ExactReplay, BMX4C encoding, and Resident Curriculum.
Use the signed GitHub release from source commit
b4671ec28bb24e2fcbdd8252576119d54fd95238. The release includes macOS Apple Silicon, Linux x86-64,
Linux x86-64 CUDA 13, and source archives. Verify SHA256SUMS.asc with the BTX release key
before replacing binaries. The independently signed btx.dev automatic-updater channel is still pinned
to v0.32.8, so it must not be used as evidence that v0.33.2 was installed.
git clone https://github.com/btxchain/btx.git
cd btx
git checkout v0.33.2
git verify-tag v0.33.2
The optional mainnet snapshot is at height 179,000
with block hash 2dd1d545b1b5e76c28b4414ebe0c22b1ba9d3ebd88662fbd1b9e4d0cf6693933. Verify its signed manifest and
2bc308713cb8c083698ca228de1ecf7a8c2800dd09894cac6c0f9dff22d7f494 digest before loading it. A snapshot shortens bootstrap;
it does not change the need to verify the release, activation schedule, and resulting chain tip.
What is BTX?
BTX is a peer-to-peer computational settlement system combining matrix-multiplication proof-of-work, post-quantum spend policies, shielded settlement with selective disclosure, and a layered architecture designed for institutions, exchanges, bridges, and autonomous agents.
The protocol is built on Bitcoin Knots v29.2 and diverges from upstream Bitcoin in several fundamental ways:
- MatMul Proof-of-Work — mainnet uses 512×512 MatMul v3 below height 185,000, then activates v4.7 Profile 1 ExactReplay with four sequential Resident Curriculum rounds on qualified accelerators
- Post-Quantum Cryptography — ML-DSA-44 (FIPS 204) and SLH-DSA-128s (FIPS 205) spend paths from genesis
- Shielded Settlement — SMILE v2 was introduced at block 0; current production support is limited to shielded-to-transparent exits and recovery after the 125000/128000 shield-ingress sunsets
- 90-second blocks with per-block ASERT difficulty adjustment
- 21M fixed supply, 20 BTX initial subsidy, 525,000-block halving interval
Network Parameters
Default Ports
| Network | RPC Port | P2P Port |
|---|---|---|
| Mainnet | 19334 | 19335 |
| Testnet3 | 29334 | 29335 |
| Testnet4 | 48332 | 48333 |
| Signet | 38332 | 38333 |
| Regtest | 18443 | 18444 |
| shieldedv2dev | 19443 | 19444 |
Chain Parameters
| Parameter | Mainnet | Test Networks | Regtest |
|---|---|---|---|
| Pre-v4.7 / legacy Matrix Dimension | 512 | 256 | 64 |
| v4.7 Epoch-A Profile 1 | 4,096 from height 185,000 | Not active | Test-only / configuration-dependent |
| Noise Rank | 8 | 4 | 4 |
| Block Time Target | 90s | 90s | 0s |
| Block Weight Limit | 24 MWU | 24 MWU | 24 MWU |
| Address Format | Bech32m witness v2 P2MR (btx1z...) | ||
Quick Start
Build the node from source:
git clone https://github.com/btxchain/btx
cd btx
cmake -B build-btx
cmake --build build-btx -j$(nproc)Start the mainnet node:
./build-btx/bin/btxd -mainnet -rpcport=19334Check network status:
./build-btx/bin/btx-cli -rpcport=19334 getmininginfoArchitecture
BTX follows a narrow base layer philosophy. The base layer orders settlement instructions, enforces spend conditions, maintains transparent and shielded state, and publishes a public work benchmark. Higher-layer systems — bank ledgers, exchanges, bridge operators, agent coordination services — settle against that base without sharing a global runtime.
The rules of settlement are identical for every participant. Any participant satisfying the spend conditions can settle. Any participant not satisfying them cannot.
Next Steps
- Installation Guide — detailed build instructions for all platforms
- RPC Reference — complete API documentation
- Mining Guide — MatMul mining operations
- MatMul PoW Specification — full technical specification