A Go wrapper for the BlockCypher cryptocurrency API.
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A Go wrapper for the BlockCypher API. Targeting support for Bitcoin (main and testnet3) and BlockCypher's internal testnet, but others (Litecoin, Dogecoin) should work too.


Import the package like so:

import "github.com/blockcypher/gobcy"

Then initiate an API struct with your credentials:

bc := gobcy.API
bc.Token = "your-api-token-here"
bc.Coin = "btc" //options: "btc","bcy","ltc","doge"
bc.Chain = "main" //depending on coin: "main","test3","test"

//using a struct literal
bc := gobcy.API{"your-api-token-here","btc","main"}

//query away


Check the "types.go" file for information on the return types. Almost all API calls are supported, with a few dropped to reduce complexity. If an API call supports URL parameters, it will likely appear as a params map[string]string variable in the API method. You can check the docs for supported URL flags.

Speaking of API docs, you can check out BlockCypher's documentation here. We've also heavily commented the code following Golang convention, so you might also find the GoDoc quite useful. The gobcy_test.go file also shows most of the API calls in action.

A Warning for 32-Bit Systems

We assume you use are using a 64-bit architecture for deployment, which automatically makes int types 64-bit, the default behavior since Go 1.1. Without 64-bit ints, some values might overflow on certain calls, depending on the blockchain you are querying. If you are using a 32-bit system, you can change all int types to int64 to explicitly work around this issue.


The aforementioned gobcy_test.go file contains a number of tests to ensure the wrapper is functioning properly. If you run it yourself, you'll have to insert a valid API token; you may also want to generate a new token, as the test POSTs and DELETEs WebHooks and Payment Forwarding requests.