A demo for storing/getting data to/from AXEL blockchain with using OP_RETURN, and extra demo of file signing/verifying based on signmessage and verifymessage AXEL blockchain API calls
node ./send.js --rpcuser=<your_rpcuser> --rpcpassword=<your_rpcpassword> --msg=<your_msg>
node ./show.js --rpcuser=<your_rpcuser> --rpcpassword=<your_rpcpassword>
Demo log during executing on testnet.
node ./sign-file.js --rpcuser=<my_rpcuser> --rpcpassword=<my_rpcpassword> --address=<your_address> --file=<your_file>
node ./verify-file.js --rpcuser=<my_rpcuser> --rpcpassword=<my_rpcpassword> --address=<your_address> --sig=<your_sig> --file=<your_file>