odudex

""" Python nostr client to for air-gapped shit posting

    Requirements:

    - python-nostr: On the same folder the air_nostr.py is, clone and rename it
    git clone https://github.com/jeffthibault/python-nostr
    mv python-nostr python_nostr

    - opencv, embit, qrcode
    pip install opencv-python embit qrcode

odudex

"""Uses Embit and qrcode modules to convert hex and bech32 keys to BIP39 seed words and vice-versa.
Also generates ascii compact seed QR codes and public keys.

Install Embit:
pip install embit

Exemple: Words as input:
python nostr_c_seed_qr.py picture body actor coil end satoshi fish mom distance proof thank play fantasy friend dinner clump boring ozone review cart virtual toss foot infant

Exemple: Hex key as input:

RandyMcMillan

// Copyright 2022 @RandyMcmillan. All rights reserved.
// Use of this source code is governed by a BSD-style license
// that can be found in the LICENSE file.

import 'dart:math';

void main() {
  
  var i = 5;
  var p = pow(2,i);

AdamISZ

Chaumian cash in a Bitcoin world - cashu, Fedimint

What's this for?

• More scalable/faster than a blockchain (not enough utxos)
• Much better privacy security model than a blockchain
• Same or better theft security model than TTP but much worse than a blockchain

If it's so great, why hasn't it been done yet?

eskema

These are the steps I took to install and run a nostr relay on a new server.

First, you'll need the server, this tutorial is using the most basic server Hetzner provides (CX11 - €4.15/mo), you don't need much. If you don't know where to get your server from and decide to go with Hetzner, consider using my affiliate link: https://hetzner.cloud/?ref=4FZql6rUwaeQ

Once you have your server running, log into it via SSH. I'm on a MacOS, so I'll use Terminal as my command line tool. open a new Terminal window and paste the following commands:

LarryRuane

#define static_assert(c) do { int _x = 1/((int)c); } while (0)

int main() {
    static_assert(sizeof(int) == 4);
    static_assert(sizeof(int) < 4);
    return 0;
}

/* output:
$ gcc t.c

vishalxl

import 'dart:io';
import 'dart:convert';

String serverUrl     = 'wss://nostr-pub.wellorder.net';
var    userPublickey = "3235036bd0957dfb27ccda02d452d7c763be40c91a1ac082ba6983b25238388c";
var    userSubReq    = '["REQ","latest",{ "authors": ["$userPublickey"], "limit": 5  } ]';

class EventData {
  String id;
  String pubkey;

vishalxl

Read Events On Command Line

Print all events:

This would print the latest 100 events:

echo '["REQ", "a", {"limit": 100} ]' | websocat wss://nostr-pub.wellorder.net

Pretty print all events

laanwj

'''
Convenience utility for connecting to a bitcoind instance through RPC.
'''
# W.J. van der Laan 2021 :: SPDX-License-Identifier: MIT
import base64
import decimal
from http import HTTPStatus
import http.client
import json
import logging

AdamISZ

#!usr/bin/env python

""" Implementation example of https://eprint.iacr.org/2016/263.pdf
Bootle et al. Section 3, polynomial evaluation protocol which scales
in the square root of the degree.
*Not* zero knowledge form.
"""

import jmbitcoin as btc
import struct