There is an attempt to institutionalize requests to recover lost funds in Ethereum. Before these requests arrive, I should prepare for them by setting guidelines for myself. Others can do what they please. I am not going to move a finger for a protocol change affecting particular accounts. In the…

It has been reported that many instances of a multisig wallet got stuck and the contained funds are not accessible. I have not checked this. Given the history, I have to keep watch on the possibility of another bug in the same code that defies the currently common story. If…

I write about what I’m doing currently for Ethereum, and why. Yellow Paper Yellow Paper is the specification of Ethereum. It’s notoriously terse, but still one of the most precise descriptions of valid Ethereum blocks and the Ethereum Virtual Machine. The contents are getting older with lots of issues and pull-requests. Since…

Tokens are blockchains’ way of controlling people. Bitcoin and Eth make people mine. When Casper comes in, Eth will make people vote on blocks. Moreover, if you misstep, your deposit will disappear. Tokens can facilitate rewards and punishments without identifying people. Tokens are like wages and employee badges. Before you…

I saw vault.sol. It’s about protecting ETH against a stolen private key. A vault key and a recover key are involved. When the vault key is stolen, you can reach your recover key and disable the vault key. For this to work, the vault key can only perform delayed withdrawals…

I stumbled upon an interesting document by the KEVM project. The KEVM project is an attempt at defining the Ethereum Virtual Machine, whose goal overlaps with eth-isabelle project. The nature of these projects involves typing in some of the contents of the yellow paper. I’ve done that to some extent…

I have been developing Bamboo, a programming language for Ethereum contracts. It is super-immature. Every time I write a new contract, I find a bug in the compiler. So, please help me find bugs in the Bamboo compiler by emptying this Ethereum contract on the Ropsten test network. Warning: it’s…

It’s been nine months since I started working on the Bamboo compiler. There was a long dormant period, but this week the compiler started emitting some bytecode. Some of the compiled code even work as intended. …

Sometimes I’m asked about the Metropolis release. The list of Metropolis EIPs looks stable already. I’m sharing how I read them, but I’m just rambling. For the precise understanding, please go to the EIP texts. EIP-86 Abstraction of transaction origin and signature Probably the deepest change in the Metropolis release is this “account abstraction”. Currently, every Ethereum…