# \#ethereum
**URL:** https://scanalyst.fourmilab.ch/tag/ethereum/125.md
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## [Blockchain Tools Version 1.0.4 Released](https://scanalyst.fourmilab.ch/t/blockchain-tools-version-1-0-4-released/378)
**Author:** [@johnwalker](https://scanalyst.fourmilab.ch/u/johnwalker)\
**Replies:** 0\
**Last updated:** [15 November 2021 15:57 UTC](https://scanalyst.fourmilab.ch/t/blockchain-tools-version-1-0-4-released/378 "2021-11-15T15:57:45Z")
I have just posted version 1.0.4 of Blockchain Tools, which fixes parsing of Bitcoin addresses from transactions posted on the blockchain and retrieved with the Bitcoin Core API version 22.0. Earlier versions of the API…
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## [Announcing: Fourmilab Blockchain Tools](https://scanalyst.fourmilab.ch/t/announcing-fourmilab-blockchain-tools/159)
**Author:** [@johnwalker](https://scanalyst.fourmilab.ch/u/johnwalker)\
**Replies:** 0\
**Last updated:** [20 October 2021 15:47 UTC](https://scanalyst.fourmilab.ch/t/announcing-fourmilab-blockchain-tools/159 "2021-10-20T15:47:42Z")
Fourmilab Blockchain Tools provide a variety of utilities for users, experimenters, and researchers working with blockchain-based cryptocurrencies such as Bitcoin and Ethereum. These are divided into two main categories…
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## [Fat Finger—More Than 12,000 Ethereum Lost to Typos](https://scanalyst.fourmilab.ch/t/fat-finger-more-than-12-000-ethereum-lost-to-typos/141)
**Author:** [@johnwalker](https://scanalyst.fourmilab.ch/u/johnwalker)\
**Replies:** 0\
**Last updated:** [18 October 2021 13:31 UTC](https://scanalyst.fourmilab.ch/t/fat-finger-more-than-12-000-ethereum-lost-to-typos/141 "2021-10-18T13:31:07Z")
Unlike Bitcoin public addresses, which incorporate a 32 bit checksum, the original specification for Ethereum public addresses was simply strings of 40 hexadecimal digits, for example 0xc9b83ab54c84aac4445b56a63033db3d5b…