Frappuccino

€6.00 / mo

Buy me one Java Chip Frappuccino with an extra espresso shot to keep me awake.

Subscribe (Bitcoin)

Mate Mate crate

€32.00 / mo

Ship 20 bottles of Mate Mate to me from Germany, 50% more caffeine than Club Mate.

Subscribe (Bitcoin)

Micro Review

€100.00 / mo

Each month you have the (non- accumulating) option of me taking a brief look at your favorite pull request.

Subscribe (Bitcoin)

Full Billionaire Mode

€1,000.00 / mo

I still won't follow you on Twitter, but I'll be more inclined to review your favorite pull request.

Subscribe (Bitcoin)

I've been contributing to Bitcoin Core on a part-time basis since mid 2017. Most of my time is spent on reviewing and testing work by others, but I also created my own pull requests. Bitcoin ACKs provides a nice overview of my activity on the repo. For a deep dive into the process, listen to my interview with Stephan Livera.

My focus recently, when not distracted by shiny object syndrome, has been on helping out with adding hardware wallet support. I gave a presentation about the state of the art at Advancing Bitcoin. Any on-chain funds received on this site go through my own experimental pull request(s).

There are various monthly support levels available, from a frappuccino all the way to Full Billionaire Mode. You can pay via Lightning or regular Bitcoin transactions.

If you prefer to make a one-off donation, you can use the address below. It's been signed with the same PGP key that I use for commits.

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

bc1quqxrdccy2fuptn94usvut5qya8eewd4jpsa27w
-----BEGIN PGP SIGNATURE-----
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=py7b
-----END PGP SIGNATURE-----

For montly contributions of $100 and above, if you're OK with doxxing yourself, you can email me at sjors@sprovoost.nl to receive VAT invoices (otherwise you're sponsoring the Dutch government at 21%).

Privacy policy: the system collects the minimum amount of data possible. By not offering fiat payments I'm saving you from the worst warrantless financial surveilance, but the blockchain doesn't offer complete privacy. If you provide a working email address I may occasionally send you updates, which you can opt-out of. Because I pay taxes I'm required to retain fiscally relevant information for up to 7 years, which probably includes any email address you give you me and the list of payments. State actors might also coerce me to ask for additional information in the future.

This site is powered by LibePatron, BTCPay, c-lightning and of course Bitcoin Core.