a6d9675d604827892e31a47994af3b64440f66db contrib: Ask for captcha in signet getcoins.py (W. J. van der Laan) Pull request description: As the faucet will always ask for a captcha now, the current script is no longer usable. Change the `getcoins.py` script to print the captcha in dot-matrix to the terminal, using unicode Braille characters. ``` $ ./getcoins.py -a tb1q9srj96uj4uk5gva9k7h2zxuy6ttu7ltsagu0gl ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠙⠢⢄⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠑⠢⣄⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣀⠴⠊⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⢦⣄⣀⠀⠀⠀⠉⠒⠤⣀⠀⠀⢀⣀⠄⠀⠀⠀⠀⠀⢀⣀⣀⣤⣄⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⠤⠊⠁⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠹⣍⠹⣦⡀⠀⠀⠀⢀⡿⢻⣿⣿⠋⠀⠀⠀⠀⢸⠋⢩⣤⣴⣿⠃⠀⠀⠀⠀⠀⠀⠈⡟⠓⠒⠒⠖⠒⢛⣿⡖⠀⠀⠀⠀⠀⡶⠒⠛⠛⠒⠒⠶⣄⠴⠊⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⢳⡈⢻⣄⠀⣰⠏⣴⣿⠟⠀⠉⠓⠢⢄⣀⣸⡀⢸⣿⠋⠉⠀⠀⠀⠀⠀⠀⠀⠀⣧⠀⣿⣿⣿⠿⠿⠟⠃⠀⠀⠀⠀⠀⣷⠀⣾⣿⡿⣷⠊⣿⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠙⣆⠹⣾⢃⣾⣿⠋⠀⠀⠀⠀⠀⠀⢸⣟⡓⣾⣟⣯⡄⠀⠀⠀⠀⠀⠀⠀⠀⡿⠐⣛⡛⠛⠲⣄⠀⠀⠀⠀⠀⠀⢀⡸⣷⡻⢯⡤⢟⣼⣿⠃⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠘⣧⢠⣾⡿⠁⠀⠀⠀⠀⠀⠀⠀⠀⢸⡇⣿⣿⠛⠏⠓⠒⠤⠤⣀⣀⣀⠀⠛⣿⡿⠿⠿⣆⣹⣧⡠⠤⠔⠒⠉⠁⣰⠟⣥⣶⣶⣌⠹⣇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡿⢸⣿⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⡇⣿⣿⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⣉⠉⠉⠉⢉⡏⢸⣿⡀⠀⠀⠀⠀⠀⡟⢸⣿⠏⠉⢹⡆⣻⣇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡇⠈⣿⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⠀⣿⣿⠀⠀⠀⠀⠀⠀⠀⠀⠀⣼⠛⠳⠶⠶⠛⣁⣼⣿⡇⠀⠀⠀⠀⠀⣧⠈⠻⠶⠶⠛⣀⣿⣿⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠉⠿⠿⢷⠀⠀⠀⠀⠀⠀⠀⠀⠀⠛⠿⠿⠿⠀⠀⠀⠀⠀⠀⠀⠀⠀⠘⠻⠿⣿⣿⣿⣿⡿⠿⠀⠀⠀⠀⠀⠀⠈⠻⠿⣿⣿⣿⣿⣿⠿⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ Enter captcha: Yf58 Payment of 0.00100000 BTC sent with txid e0a96a2a768d1ae0d22eaa2942476927d956445276bdf508dfd2f0e2e836f300 ``` The only added dependency is that `convert` from ImageMagick (or compatible fork) is installed. Captchas are disabled by default for custom faucets, but it is possible to specify a custom captcha URL on the command line. Also adds a way to change the amount requested with e.g. `-n 0.1`. Edit: credit where credit is due, yope gave me the idea of using Braille characters as a widely available way to do graphics in the terminal. Another possibility is `2x2` block characters but it is a lot less compact. Yet another one is [VT340 Sixel graphics](https://en.wikipedia.org/wiki/Sixel) but it's not supported in many terminal emulators. ACKs for top commit: kallewoof: Tested ACK a6d9675d604827892e31a47994af3b64440f66db dunxen: Tested ACK a6d9675 lsilva01: Tested ACK a6d9675d on Ubuntu 20.04 with the command below: shaavan: ACK a6d9675d604827892e31a47994af3b64440f66db stratospher: Tested ACK a6d9675 on macOS 10.15.7. This PR: theStack: tACK a6d9675d604827892e31a47994af3b64440f66db ♟️ Tree-SHA512: 6b39cadcc42b41289977daa523c849d0b1e194ff385a7828ca0097efc0b4d7c74d1ebd3f5b274762563cf039f5198ce22a3ea8cfaa8ac3b9f9c9a954fe43d457
Bitcoin Core integration/staging tree
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