https://yadi.sk/d/a3xM9BCepP4nBw
Source code here
https://github.com/3s3s/blockchaindata
The extension is working with RPC. It require access to full synchronized Bitcoin (or any other Bitcoin-fork) node.
This is recommended bitcoin.conf settings
testnet=1
server=1
rpcbind=127.0.0.1
rpcallowip=127.0.0.1
rpcuser=rpc_btc_test
rpcpassword=rpc_btc_password_test
txindex=1
[test]
rpcport=18332
limitancestorcount=1000
limitdescedantcount=1000
walletrejectlongchains=0
After installation extension will appear as small icon. It needed click to the icon and will appear the window with intuitive interface
You can choose file (html or small picture) and click "Send Request" button. After some time you will see the result or error message.
The extension is working with addresses like http://tbtc/
For example, if extension is installed then link will clickable
http://tbtc/8af6633160b982a0b0b4d4962ad28e0d5b3dd97e05e27cc2dd64ec0c56820df5