86 lines
2.2 KiB
Markdown
86 lines
2.2 KiB
Markdown
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chaincfg
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========
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[](https://travis-ci.org/btcsuite/btcd)
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[](http://copyfree.org)
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[](http://godoc.org/github.com/btcsuite/btcd/chaincfg)
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Package chaincfg defines chain configuration parameters for the three standard
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Bitcoin networks and provides the ability for callers to define their own custom
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Bitcoin networks.
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Although this package was primarily written for btcd, it has intentionally been
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designed so it can be used as a standalone package for any projects needing to
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use parameters for the standard Bitcoin networks or for projects needing to
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define their own network.
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## Sample Use
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```Go
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package main
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import (
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"flag"
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"fmt"
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"log"
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"github.com/btcsuite/btcutil"
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"github.com/btcsuite/btcd/chaincfg"
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)
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var testnet = flag.Bool("testnet", false, "operate on the testnet Bitcoin network")
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// By default (without -testnet), use mainnet.
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var chainParams = &chaincfg.MainNetParams
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func main() {
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flag.Parse()
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// Modify active network parameters if operating on testnet.
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if *testnet {
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chainParams = &chaincfg.TestNet3Params
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}
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// later...
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// Create and print new payment address, specific to the active network.
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pubKeyHash := make([]byte, 20)
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addr, err := btcutil.NewAddressPubKeyHash(pubKeyHash, chainParams)
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if err != nil {
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log.Fatal(err)
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}
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fmt.Println(addr)
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}
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```
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## Installation and Updating
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```bash
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$ go get -u github.com/btcsuite/btcd/chaincfg
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```
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## GPG Verification Key
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All official release tags are signed by Conformal so users can ensure the code
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has not been tampered with and is coming from the btcsuite developers. To
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verify the signature perform the following:
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- Download the public key from the Conformal website at
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https://opensource.conformal.com/GIT-GPG-KEY-conformal.txt
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- Import the public key into your GPG keyring:
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```bash
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gpg --import GIT-GPG-KEY-conformal.txt
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```
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- Verify the release tag with the following command where `TAG_NAME` is a
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placeholder for the specific tag:
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```bash
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git tag -v TAG_NAME
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```
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## License
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Package chaincfg is licensed under the [copyfree](http://copyfree.org) ISC
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License.
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