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David Coen
_@davidcoen.it
npub149mp...as0t
Author of Q/A about Bitcoin, SW QA Tester and Support for EdgeWallet. Tips:⚡️ tips@davidcoen.it Useful links: https://links.davidcoen.it Lightning node: 02e74c09ca720c891221164424651f62176a4737a4b2fd4f75a5befee127e90b9e
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thedavidcoen 2 years ago
Listen side B of The Seventh One by Toto. Thank me later. image
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thedavidcoen 2 years ago
"Shoot the thrill" on my Technics SL-1401 + AT440MLa, through my Yamaha CA-610.
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thedavidcoen 2 years ago
I use #LightningNetwork for my recurring payments. Instant and zero fees. Pure p2p, no routing nodes. It works great. I don't understand all this noise around it. image
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thedavidcoen 2 years ago
A curiosity about Bitcoin you might not know. If you are at the last block of the current Epoch and look behind, the subsidy per block equals the percentage of the total supply mined during that Epoch and the percentage of total supply that still need to be mined. Example: we are at Epoch 4, the subsidy is 6.25 BTC per block. At block 840,000 we'll start a new Epoch with a new halving. The total bitcoin mined during Epoch 4 will be 6.25% of the total supply, and an additional 6.25% will remain to be mined.
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thedavidcoen 2 years ago
A curiosity about Ethereum and Bitcoin that not many people know about. By default, Ethereum does not have a checksum in its addresses. What does this mean? Try entering this address into your wallet: 0x5f927395213ee6b95de97bddcb1b2b1c0f16844f Now enter the address 0x5f927395213ee6b95de97bddbc1b2b1c0f16844f Your wallet will consider both addresses valid. However, if you look closely, the second address has two letters switched. Assuming the first address is yours, if someone sends funds to the second address, they obviously wouldn't reach your wallet. To address this problem, the Checksum was introduced as an extra solution. To generate a checksum, the Ethereum address is first converted into a lowercase and uppercase version. Then, the checksum is calculated by hashing the address and comparing it to the lowercase and uppercase version. If the hashed address matches the lowercase or uppercase version, the checksum is considered valid. Therefore, 0x5f927395213ee6b95de97bddcb1b2b1c0f16844f becomes 0x5F927395213ee6b95dE97bDdCb1b2B1C0F16844F and if you try to invert some letters, the new address will be considered invalid, provided your wallet supports checksum! In Bitcoin, this does not happen: there is no extra solution applied. The reason is simple: addresses are already generated with a checksum. So, if we take a random address 1L7s77cV9hCAGPXo2SNmLmQ3FaPstYJVcT and switch two letters, obtaining 1L7s77cV9hCAGPXo2SNmLmQ3FaPtsYJVcT, if we scan the address, our wallet will show us an error (invalid address). Satoshi was foresighted! Nakamoto 1: Buterin 0
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thedavidcoen 2 years ago
Zap ⚡ time with Snort Social + Alby, with total budget and per zap established early. Each tap (Zap) is a Lightning instant payment!
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thedavidcoen 2 years ago
I followed back some bitcoiners I missed. If I should follow you please let me know why! image
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thedavidcoen 2 years ago
If you have an account on my BTCpay server https://btcpay.davidcoen.it/, you should be able to get free Nostr verification thanks to the NIP-05 plugin and the amazing work by BTCpay guys! You should get for example: name@btcpay.davidcoen.it Let me know if it works for you.
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thedavidcoen 2 years ago
Timechain Calendar is great, so... Why shouldn't I have it as a live wallpaper for my office? 😃 image