php – does anyone know how to send the “exp” parameter in an Electrum request

I tried modifying the request so it would include a 3600 second expire time. (minutes – 1 hour) as shown in the example it returned an error the parameter was invalid. It shows – but as “null” curl –data-binary ‘{“id”:”curltext”,”method”:”addrequest”,”params”:{“amount”:”3.14″,”exp”:”3600″,”memo”:”test”}}’ http://127.0.0.1:7777 {“error”: {“message”: “Invalid parameters.”, “code”: -32602}, “jsonrpc”: “2.0”, “id”: “curltext”}[ This is Electrum client […]

bitcoin core – Aborting/cancelling a transfer transaction

I’m running Bitcoin Core and I’m 7 days behind syncing currently. Last night, I initiated a transfer of some bitcoins to another person (He bought it from me) However, 4 hours later, he closed his account, and hence, the money he paid me was returned to him automatically without my approval. Since that is the […]

How do i get my Bitcoin Cash from Mycelium wallet?

mycelium by default uses the seed to generate private keys. you must have this seed of 12 words (available when creating wallet, not sure if you can get it later). you recreate the wallet in any other wallet program supporting seeding (most of them out there), then export private keys from the new program (as […]

security – How to securely store Bitcoin server-side?

I am working on a web application that needs to hold users Bitcoin for an extended amount of time (escrow-like scenario), and I was wondering what are some good steps/precautions and principles (dos & dont’s) to do this securely. This is mostly in regards to security, so things like individual vs single server-side wallet etc. […]