status-go/vendor/github.com/btcsuite/btcd/chaincfg/doc.go

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// Package chaincfg defines chain configuration parameters.
//
// In addition to the main Bitcoin network, which is intended for the transfer
// of monetary value, there also exists two currently active standard networks:
// regression test and testnet (version 3). These networks are incompatible
// with each other (each sharing a different genesis block) and software should
// handle errors where input intended for one network is used on an application
// instance running on a different network.
//
// For library packages, chaincfg provides the ability to lookup chain
// parameters and encoding magics when passed a *Params. Older APIs not updated
// to the new convention of passing a *Params may lookup the parameters for a
// wire.BitcoinNet using ParamsForNet, but be aware that this usage is
// deprecated and will be removed from chaincfg in the future.
//
// For main packages, a (typically global) var may be assigned the address of
// one of the standard Param vars for use as the application's "active" network.
// When a network parameter is needed, it may then be looked up through this
// variable (either directly, or hidden in a library call).
//
// package main
//
// import (
// "flag"
// "fmt"
// "log"
//
// "github.com/btcsuite/btcutil"
// "github.com/btcsuite/btcd/chaincfg"
// )
//
// var testnet = flag.Bool("testnet", false, "operate on the testnet Bitcoin network")
//
// // By default (without -testnet), use mainnet.
// var chainParams = &chaincfg.MainNetParams
//
// func main() {
// flag.Parse()
//
// // Modify active network parameters if operating on testnet.
// if *testnet {
// chainParams = &chaincfg.TestNet3Params
// }
//
// // later...
//
// // Create and print new payment address, specific to the active network.
// pubKeyHash := make([]byte, 20)
// addr, err := btcutil.NewAddressPubKeyHash(pubKeyHash, chainParams)
// if err != nil {
// log.Fatal(err)
// }
// fmt.Println(addr)
// }
//
// If an application does not use one of the three standard Bitcoin networks,
// a new Params struct may be created which defines the parameters for the
// non-standard network. As a general rule of thumb, all network parameters
// should be unique to the network, but parameter collisions can still occur
// (unfortunately, this is the case with regtest and testnet3 sharing magics).
package chaincfg