If you use Core v29 or v30, they bring new costs: the costs of helping relay and store spam, mostly for the sake of scams, and also to help various brc20 altcoins compete with bitcoin. These costs include up to $11.40 per year in bandwidth. Consider running Knots to save money.

X (formerly Twitter)

ProofOfCash ⚔️ URSF (@ProofOfCash) on X

@SuperTestnet Even at $6.50 / GB (very high and rare cost of data) that's $0.0000217 of savings per 100 kB OP_RETURN. A block filled with 1k 100 k...

"The filter meant to eject spam from your mempool does not eject spam from the blockchain. Therefore, remove it!" "The policy meant to eject students from the staff lounge does not eject them from the school. Therefore, remove it!" Same energy

If you want your coffee maker to stop coffee grains from entering your coffee, and it doesn't, that's a technical problem. Coffee filters help. If you want your mempool policy to stop spam from entering your mempool, and it doesn't, that's a technical problem. Spam filters help.

Future me: you want to run a node? Great! There are 2 main kinds: Core and Knots. The main difference between them is how they approach spam. Core takes a welcoming stance toward spam transactions, whereas Knots filters them out as much as possible. Which one do you want to run?

My latest invention is the Bip157 Playground. Learn what bip157 filters are, play with them, and consider using them in your next bitcoin privacy project -- all from the comfort of your web browser.

Yesterday, on Rearden Code's podcast, we had a productive discussion about the Spam Wars My favorite clip is this, where he concedes that filtering spam would be a good idea *if* a user wants their node to help relay txs as a public service Full episode:

X (formerly Twitter)

Rearden Vibes 🛩 fork/acc (@reardencode) on X

https://t.co/9VzE1bpUFq

I've made lots of progress in my quest to make a bip157 browser wallet! Thanks x.com/guggero for serving bip158 filters in a web-friendly way at block-dn.org, and thanks bcoin.org for providing libraries that let me parse them. Most of the hard parts work now!