如何从区块链获取给定地址的详细信息？

Question

I am building blockchain explorer. I have my own blockchain. In that, i want to search details of a given address from blockchain. There is no direct API to get detail of an address, could anybody help how to this ? Thanks in Advance.

Answer 1

Two options:

option 1:

blockchain.info has an open API (REST + JSON)

https://blockchain.info/it/api/blockchain_api

here how:

https://blockchain.info/it/rawaddr/$bitcoin_address

bear in mind that you can only acquire info from an address that actually moved at least once some bitcoin on the network. If you just create a new wallet and do not transact then the public address is non existent on the blockchain (ie there's no difference between a newly generated address and a non existent address). That's the "shameful" approach as you are building a blockchain explorer using another blockchain explorer, see option 2 for the correct approach:

option 2:

Run a bitcoin node on your own and query your stuff on it. You may not be able to run a node on a normal hosting, probably you need something more like an Amazon AWS instance or host on your own server

Answer 2

I see from comments you are using peercoin ( https://github.com/peercoin/peercoin ). If it's a fork of Bitcoin, then the following holds:

In basic Bitcoin full-node setup, it's impossible to query random address. You can add some addresses to track, but think of it as of "yours".

There are modifications to the bitcoin-core, that have a addressindex option. The one I am aware of is bitcore : https://github.com/bitpay/bitcore-node .

Here's how to run your own blockchain explorer for Bitcoin using bitcore's insight : https://github.com/bitpay/insight-api

npm install -g bitcore@latest
bitcore create mynode
cd mynode
bitcore install insight-api
bitcore install insight-ui
bitcore start

This will launch full node in the needed mode ( addressindex=1 enabled, etc) and a webservice with API and UI, similar to: https://insight.bitpay.com/ .

Config file will be located at mynode/bitcore-node.json

Bitcore's docs and not well maintained, some are outdated. Try the code, but don't give up if it fails. For more information, refer to the source code.

PS I am not sure how to convert this to run with your blockchain, but if it's similar to bitcoin, it should be possible. I think it's closest you can get without writing your own explorer.