chaincraft
Reference implementation of the Chaincraft wire protocol and object semantics. Release 1.2.0 on PyPI.
Open-source toolkit for peer-to-peer protocols like blockchains, chat rooms, BitTorrent swarms, and content-addressed stores.
Install
pip install chaincraft
Ed25519 is optional: pip install "chaincraft[ed25519]". The node is
python3 -m chaincraft.node. Default listen is 0.0.0.0:9735.
Hello World
Two TCP nodes in one process. A listens on 9735, B on 9736, B dials A and
gossips app.hello.
import time
from chaincraft.mesh import Mesh
from chaincraft.object import SharedObject
class Hello(SharedObject):
def receive(self, message):
print("Received:", message["message"])
hello = Hello()
a = Mesh(on_app=lambda t, d: hello.receive(d) if t == "app.hello" else None)
b = Mesh()
print("listening", a.start("127.0.0.1", 9735))
print("listening", b.start("127.0.0.1", 9736))
b.connect(a.listen_addr)
digest = b.broadcast("app.hello", {"message": "Hello, Chaincraft!"})
time.sleep(0.4)
print(digest)
a.close()
b.close()
CLI, three languages on one loopback mesh:
python3 -m chaincraft.node
chaincraft-node 127.0.0.1:9736
chaincraft-ts-node 127.0.0.1:9737
Then {"cmd":"connect","addr":"127.0.0.1:9735"} on the last two, and
{"cmd":"send","type":"app.hello","data":{"message":"Hello, Chaincraft!"}} on
Python.
Further local nodes take unused ports and connect. Remote hosts dial this
machine's unicast IPv4 or DNS name on 9735. connect allows loopback,
RFC1918, public unicast IPv4, localhost, .local, and ordinary DNS names.
Each mesh keeps at most 256 peers.
Specification and the Rust and TypeScript implementations live in the monorepo.
1 maintainer
Metadata
1 maintainer
Release files for chaincraft 1.2.0
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Source distribution (sdist)
| File | Size | Uploaded | Provenance | |
|---|---|---|---|---|
| chaincraft-1.2.0.tar.gz | 58.0 kB | With provenance | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| chaincraft-1.2.0-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 113.0 kB
Release files / chaincraft-1.2.0.tar.gz
| Download URL | chaincraft-1.2.0.tar.gz |
|---|---|
| Size | 58.0 kB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
67f036d1833e47580d025e37f1a688ac4d323cd777a30809053eee72cdf5f989
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Transparency logRelease files / chaincraft-1.2.0-py3-none-any.whl
| Download URL | chaincraft-1.2.0-py3-none-any.whl |
|---|---|
| Size | 55.0 kB |
| Tags | Python 3 |
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SHA-256 checksum How to use checksums |
9e3caae46a4984699b4271feeb26bcd1492b1437251d178d66a8067e0659a5d7
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Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.16
|
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Transparency logSecurity for chaincraft 1.2.0
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Attestation for chaincraft-1.2.0.tar.gz
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Signed by GitHub Actions, verified by PyPI on Oct 20, 2026.
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