I’d like to perform a transaction like this…
CHECKLOCKTIMEVERIFY DROP DUP HASH160 EQUALVERIFY CHECKSIG
Which brings many questions :
— How to encode
for setting the timing as a block height ?
— How to convert an address to a pubkeyHash ?
— How to assemble this into bytecode the network can understand ?
— How to automatically select utxo ?
— How to publish the resulting transaction to Bitcoin testnet ?
I’d like to install nothing. Which means I’d prefer a web service. Otherwise Windows or Linux is Ok.
Also, yes I’d like to do this from a Wallet or a private key as Text. And as result, I don’t want to perform signing an utxo selection manually. I mean automatically like with a normal transaction as only the output needs to be manual.