⁵⁄₉
@fiveoutofnine
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Joined June 2020
I've learned a lot in the past from reading contracts, so I put together a list of smart contracts I find cool, fun, or interesting (e.g. on-chain 3D renderers, ERC721 quine NFT, etc.):.
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This 1 line of code demonstrates 3 months of research on board representation, piece representation, and chess engines. It checks the legality of any chess knight/king move. Here's a breakdown:
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NFT minting with 30 day ETH back guarantee. Maybe teams can do something similar to reduce risk for minters?
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I finally deployed my on-chain chess engine NFT: where you play against the smart contract. 59 moves max per game, 59 games max. Engine, art, metadata are all 100% on-chain. I spent at least 200-300 hours on this project since October. Mint is free.
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I just found the biggest hustler on crypto GitHub. omahs has forked 1600+ repos to "chore: fix typo" on each of them:
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How the "brains" of a chess engine can beat the average person with just 8 numbers:
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protip: if you have some project idea, search with `lang:solidity`. might save some work/give inspiration
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There is a fully onchain NFT on @base you could only mint by beating a chess engine in a @warpcast_ frame. Only 26 out of ~4390 people succeeded (≈0.59%)
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Show this to anyone that thinks you can enforce royalties at the contract layer. (wrap NFT with overridden transfer function, transfer the wrapped NFT, then unwrap whenever)
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In the last 555 days, I ran 10,000km with 0 rest days. To commemorate that, I built 555 (1000 × ⁵⁄₉), a fully onchain, ⁵⁄₉-themed collection. Mint:
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why are they roasting my project from 2021 ??? wtf
2025 is around the corner. Bitcoin at new ATHs. ZK Chains are launching left and right. And you? You’re still clicking buttons to sign transactions. NO MORE. Introducing ZKsync SSO, a toolkit for devs to create Web2-like UX for Web3 applications across the Elastic Chain.
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Commemorative NFTs for the @curta_ctf team's top 10 finish in the @paradigm_ctf:.◆ 100% onchain audio.◆ 100% onchain animation.◆ 100% onchain metadata.◆ 0 browser APIs.◆ 3 melody lines + 1 bass line with volume progression
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Introducing: UI/UX explorations of on-chain data. For the first exploration, I built an easy way to browse through on-chain messages with a familiar, chat-like interface:
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How to loop through some numbers when the increment isn't easy/cheap to express mathematically:. 3, 4, 5, 6, 10, 11, 12, 13, 17, 18, 19, 20 are assigned to `value` in the example below (in that order)
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rawdogged my first sub-3 marathon. no prep/taper, no water, no fuel, 4:00/km (6:27/mi)
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doing so much thinking before implementing something in solidity that I feel more like a philosopher than a dev.
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excited to announce that I've acquired a (real) curta calculator, a mechanical device widely considered the best portable calculator until electronic ones came out in the 1970s
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I’m excited to finally announce that I’m building @waterfall_mkt, an on-chain NFT trading and pricing protocol to solve NFT pricing and illiquidity.
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Been finding this useful for getting full coverage on unit tests w/ Foundry:. 1. Add ` to .gitignore.2. Run `forge coverage --report lcov`.3. Install the "Coverage Gutters" extension 4. cmd+shft+p > "Display Coverage Gutters"
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why use when you can spend 54k USD to play chess on ethereum
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Implementing 100% onchain worlds with terrain generation and hyper-optimized pixel art
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Introducing Tardis: collections of past EVM CTFs to play locally and level-up your skills. Starting w/ past @curta_ctf puzzles to solve, even after submissions have closed .
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Setting empty storage slots costs a lot more gas than setting nonzero storage slots, and oftentimes, you don't need all 256 bits. Realistic (?) example below that would actually have pretty significant savings:
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How to turn `if` blocks into 3 bit operations for small gas savings. I actually went with the top one because it was for a view function, and code readability is nice (though gas savings are more important if tested thoroughly, IMO) :)
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hardware engineers/embedded systems engineers have the coolest business cards:.- card that can fly¹.- card that runs linux².- card that's an electronic keyboard³.- card that's a fully programmable microcontroller⁴
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fueling for my 50mi run:.6.5L of water.1.2L of Gatorlyte.1L of coffee.10 Liquid IV.7 Maurten 160 gels (40g carbs).2 strawberry rollcakes.2 chocolate cheesecakes. I put it all in a bag, tied it to the treadmill, and consumed ~70% of it during the 6 hours
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My chess engine project was a creative project (mainly the idea of putting an engine on-chain) and optimization challenge. A lot of interesting research I had to do for it, so it's VERY tiring when ppl "suggest" p2e/dao/giveaway for it. Not everything has to make money/hype 🙃.
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first non-technical blog post (!): a list of great self-taught feats/careers. I wrote it because I like to think anyone can learn to do anything if they try hard enough, and it's inspiring to see the greatest examples.
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Breakdown of how this piece of cursed code help me put music onchain
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study how constrained environments bring out some of the most creative outputs.
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Many people that have gone through my chess contract have asked for help with the bit twiddling, so I removed as much of it as I could + wrote it in Python to make it easier to follow. It's logically equivalent, so it should serve as a nice 1:1 guide:
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Small optimizations you should always keep in mind for some operands `n` and `m`:. `n << m` instead of `n * (2^m)`.`n >> m` instead of `n // (2^m)`.`n & (2^m - 1)` instead of `n % (2^m)`.
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Alternative idea: vested primary sale funds. Most devs don't *want* to rug at first. It just happens because primary sales are so high. If funds are locked up for, say, 3 months, perhaps they will be incentivized to impl. the roadmap? If >x% refunded, funds go into a multisig.
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I made the cloudflare "content restricted" error into a fully on-chain NFT to make the image accessible forever
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Some useful functions for modifying colors on-chain. Explanations below.
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When you need a quick/small mapping, bitpacking values into a `uint256` can actually *simplify* the process!. For example, if you want to return true/false for (0, 1, . , 255), and a pattern is hard to establish algorithmically:
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I wrote a write-up on bit operations and how you can use them to gain more granular control of your code. It includes an implementation of tic-tac-toe almost entirely using bit operations to show my thought process as well.
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39.1% cheaper gas for situations like this. IMO, this justifies the decrease in readability. but even then, I don't think it's *that* esoteric. what the code does is pretty clear with just a couple lines of comments
@0xkrane @transmissions11 fair, but for a situation where the numbers are very random/lacking a pattern, this isn't that bad. e.g. how would you loop 23, 254, 124, 77, 178, 34, 251, 247, 232, 238, 133, 122, 167, 211, 211, 17, 181, 28, 253, 65, 247, 169, 202, 74, 110, 65, 93, 191, 211, 200, 102, 19?.
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protip: you can also initialize events/errors with key-value mappings to prevent foot guns and improve readability
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Directly using some conditional result (`true` as 1 and `false` as 0) to create branchless optimizations is underrated by optimizoors. Some random examples:
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WEB3 NATIVE RECRUITING + CREDENTIALS. Anyone can solve puzzles @curta_ctf to establish on-chain credentials and get job opportunities. e.g., @SpearbitDAO is offering JSR consideration for placing top 5 on
Can't wait for everyone to try out our CTF over on @curta_ctf made by our very own @_hrkrshnn. As a reminder - the top 5 placements will receive an opportunity for a JSR role at Spearbit :).
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proud to announce that I have re-discovered this book in my apartment 2 years after buying it and have read zero (0) pages of it.
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Multipart generative puzzle CTF:. Each part has 2 functions:.1. `generate` (seeded with `msg.sender`; e.g. empty minesweeper board).2. `verify`. Participants have to figure out valid inputs based on both functions. First to solve all parts can claim an NFT and lock minting.
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compilation of the best bit twiddling resources I've come across (linked below)
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1 thing I learned in 2024 was people actually do notice the details in your code/work, especially if you do it diligently and consistently over everything you produce.
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Random useful information: Twitter IDs are 63 bits (minus sign bit), and the first 41 are the timestamps since ≈Nov. 3, 2010
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How many NFTs are considered "floor" NFTs in a collection?. I computed `sale_price / floor_at_sale` for BAYC:.38.32% of apes have sold within 5% of the floor before. A collection's floor is currently way too dominant as a pricing reference, and this shouldn't be the case.
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I figured out how to start the next bull run: ETHOrdinals. Send 1 wei to contract w/ a salt as proof of work to inscribe an NFT
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got so bored on 16hr flight I started playing with the Timer app until I got the highest possible score
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I compiled all NFT mints, ETH value, and gas usage into an 11.94 GB csv:
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NO WAY APPLE JUST KILLED 500 CTYPTO CONPANIES THEYRE DOING NFT LENDING.
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this is going to sound autistic, but I take mental notes on how people take screenshots (e.g. how even is the padding).
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Invite-gated NFT distribution + supply cap:.* 16 can invite 8 each (128).* 128 can invite 4 each (512).* 512 can invite 2 each (1024).* 1024 can invite 1 each (1024). Supply size: 16 + 128 + 512 + 1024 + 1024 = 2704
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I wanted to confirm the myth that auctions’ bids are actually mostly at the start/end, so I visualized @nounsdao auctions’ bids. Even though it was kinda expected, I’m pretty surprised how much action takes place in the last 4 mins
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Not many people know this, but there's been a full game of smart contract vs smart contract chess on mainnet ~2 years ago. Seeing @z0age's contract beat mine was like the happiest moment of that month for me
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365 days of running every day → 5216.93 total miles. ≈ 100.05mi/week.≈ 199 marathons.≈ 5/9 marathons/day
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