public master keys to addresses

[thaten]

Hello,
I am searching for a self Hosted (!!) solution to generate addresses from a public zpub key. It would be great, if it has an intigrated rest api inside. Maybe something for nodejs would be very nice.

This would be a nice solution for cold storage wallets.

I am currently using https://github.com/romanz/electrs for various stuff, but unfortunately I dont find any api details anymore.

[NeuroticFish]

I am currently using https://github.com/romanz/electrs for various stuff, but unfortunately I dont find any api details anymore.

The documentation for the Electrum Server Protocol is the same as for ElectrumX, i.e. this one: https://electrumx-spesmilo.readthedocs.io/en/latest/protocol.html
Electrs most probably also follows that.

[n0nce]

As you can see here, generating addresses from an extended public key is not that hard.



That being said, existing solutions can be found easily on GitHub. This one for example, seems to fit almost exactly your description; since it's in JavaScript it should be easy to embed it in a NodeJS application with API that you add yourself. https://github.com/swan-bitcoin/xpub-tool

[thaten]

I am currently using https://github.com/romanz/electrs for various stuff, but unfortunately I dont find any api details anymore.

The documentation for the Electrum Server Protocol is the same as for ElectrumX, i.e. this one: https://electrumx-spesmilo.readthedocs.io/en/latest/protocol.html
Electrs most probably also follows that.

I am talking about the Rest API from Electrs. It differs from the ElectrumX protocoll.

As you can see here, generating addresses from an extended public key is not that hard.

https://learnmeabitcoin.com/technical/images/extended-keys/child-extended-public-key-normal.png

That being said, existing solutions can be found easily on GitHub. This one for example, seems to fit almost exactly your description; since it's in JavaScript it should be easy to embed it in a NodeJS application with API that you add yourself. https://github.com/swan-bitcoin/xpub-tool

Thanks, I will look into that and update, once it is working.