Contract Level

Thank you @chainlink for awarding YieldCoin the grand prize in the Chromion hackathon! We all know the entire world is going to run on Chainlink, so this is a great honor, and (was) a personal life goal. Thank you @CyfrinUpdraft for the resources to learn invariant testing, formal verification, and the security first approach! Thank you @concero_io for inspiring the idea, Parent-Child architecture, and custom CCIP tx types! Thank you everyone for the support! YieldCoin development continues alongside researching a proposal for the vLEI hackathon, Contract Level Identity (name pending review): A Decentralized Fuzzy Extractor, to address the critical need for absolute sybil-resistance by consensus - an inherent requirement for onchain identity and compliance. Read the YieldCoin dev notes taken during the hackathon here: @contractlevel/dev-notes-yieldcoin-chromion-hackathon-26685753741c" target="_blank" rel="nofollow noopener">medium.com/@contractlevel…

github.com/contractlevel/… BaseVault._getTVL is now virtual and overridden by Parent and Child because Child should include epoch net flow deposit recovery mode funds Parent doesnt because it doesnt receive netflow deposit ccip txes (if it is strategy, and fails, we atomic revert)

@pashov @ygorz01 @0xiehnnkta @p_tsanev @paradigm @trailofbits running it roughly once a week during development 🫡

@contractlevel @ygorz01 @0xiehnnkta @p_tsanev @paradigm @trailofbits Solidity auditor mentioned ✨

Speaking of Agent Skills, any other good ones to add to add that also work nicely with Cursor? Would be nice to have some related to smart contracts & security.

@pashov solidity-auditor - github.com/pashov/skills @0xiehnnkta nemesis - github.com/0xiehnnkta/nem… @p_tsanev plamen - github.com/PlamenTSV/plam… @paradigm evmbenchmark - github.com/paradigmxyz/ev… @trailofbits skills - github.com/trailofbits/sk… trailofbits claude config - github.com/trailofbits/cl… @CDSecurity_io - github.com/CDSecurity/cds… aggregated resources: github.com/pashov/ai-web3… #open-source" target="_blank" rel="nofollow noopener">github.com/marchev/awesom…

@contractlevel Thank you. So many skills out there I lost track.

Yieldcoin v2 is a compliance-ready, yield optimizer that takes a performance fee and management fee for automated asset management. It is a very defensible business model built on @chainlink $LINK. Interested in operating a commercial instance? Get in touch!

@adelbucetta @chainlink @SmartContract Yieldcoin doesn't use price feeds, and Chainlink ACE doesn't fetch data. ACE is a framework of contracts for modular compliance policies. Yieldcoin v2 uses CCIP for crosschain bridging, CRE for off/crosschain orchestration, and ACE for modular compliance.

@contractlevel @chainlink @SmartContract the honest answer is that yieldcoin's integration with chainlink ace isn't just about fetching prices, it's about the potential for decentralized oracle services to upend traditional data feeds in finance

This article discusses how Yieldcoin v2 integrates @chainlink ACE $LINK @SmartContract

github.com/contractlevel/… Performance fees with per-user operations was a buggy nightmare, but seems possible with epoch batching. The current fee model for Yieldcoin v2 is take a management fee from annual TVL when a rebalance completes, and a performance fee from generated yield when an epoch closes.

@pappas9999 An agent with the @chainlink ACE skill reviewed this article 😉 x.com/contractlevel/…

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github.com/contractlevel/… @chainlink ccip fork testing recovery modes

NEW: @VitalikButerin argues AI-assisted formal verification could be the "final form of software development". AI writes the code, formal proofs verify it's correct, and together they could make Ethereum and other secure systems genuinely bug-proof.

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@andrej_dev Amazing, thank you 👍

github.com/smartcontractk… these tests required revisiting the @chainlink local ccip simulator, which had updated its internal routing for new versions of ccip. interestingly, in the forks, it was found that the legacy version was used for some lanes, but not others

github.com/contractlevel/… ccip fork tests assert the underlying asset moves across chains correctly during the different epoch and rebalance paths ccip fork tests for recovery modes is the next step

Cross-asset yield is meaningfully possible with the right rebalance frequency and APY differential threshold, but not meaningfully worth it. At least not for Yieldcoin anyway. For example, if we want to optimize yield between $USDC and $USDT, the amount of time spent recouping swap costs would eat so far into the yield that would otherwise have been generated, it's not worth it economically, and it's definitely not worth the extra bloat of decimal handling, and integrating swap protocols. A better model for Yieldcoin v2 is: dedicated crosschain vaults per asset. The only constraint is the underlying asset's @chainlink CCIP lane availability. Something like @circle's $USDC makes a good choice for first asset under management because of its CCIP compatability. Most assets have consistent decimals across chains, making it straightforward to use a constant in relevant calculations. However, $USDC and $USDT on BSC have 18 decimals. Asset decimals must be checked (and handled) if integrating a new chain.

If you believe all projects should fuzz please share this around

Studying complex protocols and bugs is one of the highest ROI activities. You learn new concepts, push where others give up, and build confidence. Always be learning and don't be intimidated by hard stuff.