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In my previous post I described the approach that we’re using on our production servers: physical RAM is larger than WAX state size, and the nodeos state is stored in a tmpfs partition.

But WAX RAM consumption is growing quite fast: thousands of new accounts are created daily, and thriving…


Recent hack of EOSX Vault has added one more item to a standard security checklist in smart contract auditing. It makes sense to describe them all in one post.

1. Check the token contract

Older CDT versions did not offer a nice wrapper for apply() handler, so the contract authors needed to pay more attention…


The WAX blockchain has grown in usage and size pretty dramatically. On May 8th 2021, 307k unique accounts have executed 51 million actions. On February 8th, it was 18k and 6 million, correspondingly.

Back in February, a typical nodeos setup would include a baremetal server with 3.5Ghz or faster Intel…


I’ve been in this blockchain space for a while, living through ups and downs in our great EOSIO ecosystem. These precious memories must not be lost, and they can actually work for the community.

So I’m starting the cc32dninenft collection on WAX and later on EOS, with three major goals:

  1. Fund the development of open-source projects that are valuable for the EOSIO community.
  2. Create an asset with a post-sale mission.
  3. Have fun.

Sales and promotions will be announced in cc32dninenft Telegram channel. More details on goals and profits distribution are on GitHub page.

The first series is celebrating the first post in this blog, and it will be issued in 100 tokens on WAX:

Stay tuned, there’s more to come.


It’s a common struggle for every dapp builder that transactions may disappear from the blockchain while their blocks are not final. A microfork, resulting in a few blocks reevaluated and newly signed, might not include the transaction you’ve already seen. …


Dan Larimer, former CTO of Block.One, has published a draft of EOS Community Governance Proposal. There’s over a 100 valuable comments by the time of this writing, and I’ll try to summarize my own thoughts here.

  1. Even at the start of EOS mainnet history, we’ve seen a very low participation…

Elrond is a relatively new player on the blockchain market, offering a new and scalable platform for WASM smart contracts. In this article I summarize the differences, advantages and disadvantages between two platforms that I found while reading through Elrond documentation. …


Recently I built and rolled out a Point-of-Sale smart contract on EOS, Telos, WAX, and 3 testnets. It will let anyone offer their goods and services on the blockchain, and accept payments in a token of their preference. Any project-specific token or wrapped BTC, USDT, and so on, will work.


Automated token payments on EOSIO blockchains, especially on congested ones like EOS Mainnet, is a tricky business: transactions may fail because of insufficient CPU or NET or RAM resource, or may get dropped because of network congestion or microforks.

Typically a business that needs to send automated token payments is…


Here’s a new weekend project. I made a prototype database writer that takes all EOSIO contract table changes and writes them in a database. This allows searching through table rows in any possible way.

The source code is available on GitHub. The writer is taking Chronicle output for all table…

cc32d9

Telegram: cc32d9, EOS account: "cc32dninexxx"

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