Van wie is deze bitcoin?

Van wie is deze bitcoin? This post is in Dutch. The short English version is in this Twitter thread: You may want to turn off transaction email notifications, and ask your favorite wallet provider to use PGP. In general email notications are a big privacy / security risk; they form a detailed record of stuff that's… Continue reading Van wie is deze bitcoin?

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Bitcoin Core Wishlist

Bitcoin Core Wishlist I started to contribute code and reviews to Bitcoin Core a few months ago and gradually accumulated lists of stuff I’d like to see. Some of these I can do myself, others are still beyond my level of expertise, still others might be terrible ideas and never happen.

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Decoding a BIP-70 Payment Request

Decoding a BIP-70 Payment Request I was trying to understand BIP-70 Payment Requests a bit better, mainly because I am confused by BitPay’s claim that they can somehow block “mistaken” transactions: We can also analyze transactions to make sure an adequate bitcoin miner fee is included. If the fee isn’t sufficient to allow the transaction to… Continue reading Decoding a BIP-70 Payment Request

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On Fees

On Fees When sending less than €1,000 of Bitcoin it’s worth paying attention to fees, but keep mind that your payment is competing with transactions that move €100,000 on equal terms. Transactions are charged per byte, not as a percentage of the amount. But willingness to pay is obviously a percentage of the amount. It’s… Continue reading On Fees

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Opt-in hard-fork without alternate transaction history?

Opt-in hard-fork without alternate transaction history? IETF’s RFC 7282 is an eloquent document which describes important aspects on koop consensus, and worthwhile if you want a more nuanced interpretation than “widespread agreement and disagreements addressed (even if not acommodated)”. Measuring Consensus Once we have a concrete technical proposal, and it seems to have some traction,… Continue reading Opt-in hard-fork without alternate transaction history?

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Replay Protection in The Blockchain Wars

Replay Protection in The Blockchain Wars First, I’ll let Jimmy Song explain transaction replay attacks: However what this short video doesn’t cover, is that there are multiple levels of replay protection. I believe a lot of anger and confusion stems from not properly understanding this. So I’ll do my best to explain.

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