Coinwall, a bitcoin paywall
Does the same job
all alternatives →- ATAdblock to Bitcoin2015 · github.com · ▲128
- ABA Browser-based Blockchain2017 · nimiq.com · ▲186
- BMBalances – Mint for Bitcoin and other cryptocurrencies2014 · balances.io · ▲94
- MAMisocoin – A barebones Bitcoin-like protocol implemented in Python 3.62017 · github.com · ▲151
- CACoinMall Alpha: A Crypto Marketplace for Digital Goods2017 · medium.com · ▲156
- MTMunt – The simplest way to accept cryptocurrencies2018 · getmunt.com · ▲98
More life & fun this month
the category →- TL
Life & fun · 10d ago · louisabraham.github.io

Photosynthesis fires two of your iPhone
Life & fun · 28d ago · photosynthesis.camera
SoloUno▲310Take control of hair pulling, nail biting & skin picking
Life & fun · 28d ago · solouno.io

Scroll through all 43,252,003,274,489,856,000 reachable Rubik's Cube permutations.
Life & fun · 26d ago · everycube.alen.is


Hi HN, I built Eigendrum, a web tool that solves the 2D wave equation for arbitrary shapes so you can hear what they sound like as drums. How it works: * Solves -∇²u = λu using finite element analysis (Kφ = λMφ) on a triangle mesh. * Validated to <0.1% error against closed-form solutions for circles (Bessel zeros) and rectangles. * Sound model factors in strike location, Rayleigh damping, and mallet width. * Includes Kac drums I & II to demonstrate identical sound spectra from different geometries. * No frameworks, build steps, or dependencies. Repo and tests:…
Life & fun · 26d ago · baselashraf81.github.io
Launched alongside, July 2014
the whole month →- SHShow HN▲1,302
Life & fun · 2014 · news.ycombinator.com
- MC
Life & fun · 2014 · setosa.io
- OC
Life & fun · 2014 · github.com
- PB
Life & fun · 2014 · pangoly.com
- NT
Life & fun · 2014 · nomadlist.io
- FA
Dev tools · 2014 · interviewing.io