kindkangkindness first — notes on blockchain, on-chain craft, and the people building ithttps://kindkang.pages.dev/Hello — what this blog is abouthttps://kindkang.pages.dev/posts/hello-world/https://kindkang.pages.dev/posts/hello-world/Why I'm writing publicly about blockchain, and what you can expect to find here.Sat, 02 May 2026 00:00:00 GMTReading the Uniswap v4 hook spechttps://kindkang.pages.dev/posts/sample-001/https://kindkang.pages.dev/posts/sample-001/Sun, 15 Jan 2023 00:00:00 GMTEVM storage slot layout, end to endhttps://kindkang.pages.dev/posts/sample-002/https://kindkang.pages.dev/posts/sample-002/Fri, 03 Feb 2023 00:00:00 GMTFoundry cheatcodes I reach for dailyhttps://kindkang.pages.dev/posts/sample-003/https://kindkang.pages.dev/posts/sample-003/Wed, 22 Feb 2023 00:00:00 GMTWhat `delegatecall` actually does to storagehttps://kindkang.pages.dev/posts/sample-004/https://kindkang.pages.dev/posts/sample-004/Mon, 13 Mar 2023 00:00:00 GMTERC-4337 entrypoint walkthroughhttps://kindkang.pages.dev/posts/sample-005/https://kindkang.pages.dev/posts/sample-005/A practical look at the parts that surprised me.Sat, 01 Apr 2023 00:00:00 GMTWhy your gas estimate is lying to youhttps://kindkang.pages.dev/posts/sample-006/https://kindkang.pages.dev/posts/sample-006/Notes from rebuilding it the long way.Thu, 20 Apr 2023 00:00:00 GMTNotes on signature malleabilityhttps://kindkang.pages.dev/posts/sample-007/https://kindkang.pages.dev/posts/sample-007/What the spec says, what the code does, and where they disagree.Tue, 09 May 2023 00:00:00 GMTL2 sequencer downtime, who payshttps://kindkang.pages.dev/posts/sample-008/https://kindkang.pages.dev/posts/sample-008/Things I wish I'd known before reading the contracts.Sun, 28 May 2023 00:00:00 GMTRebuilding ecrecover from scratchhttps://kindkang.pages.dev/posts/sample-009/https://kindkang.pages.dev/posts/sample-009/Fri, 16 Jun 2023 00:00:00 GMTSolidity inline assembly, when it earns its keephttps://kindkang.pages.dev/posts/sample-010/https://kindkang.pages.dev/posts/sample-010/Wed, 05 Jul 2023 00:00:00 GMTA small Optimism bedrock primerhttps://kindkang.pages.dev/posts/sample-011/https://kindkang.pages.dev/posts/sample-011/Mon, 24 Jul 2023 00:00:00 GMTAuditing a vault: my checklisthttps://kindkang.pages.dev/posts/sample-012/https://kindkang.pages.dev/posts/sample-012/Sat, 12 Aug 2023 00:00:00 GMTHow CREATE2 salts get minedhttps://kindkang.pages.dev/posts/sample-013/https://kindkang.pages.dev/posts/sample-013/A practical look at the parts that surprised me.Thu, 31 Aug 2023 00:00:00 GMTMEV-Boost relays, rankedhttps://kindkang.pages.dev/posts/sample-014/https://kindkang.pages.dev/posts/sample-014/Notes from rebuilding it the long way.Tue, 19 Sep 2023 00:00:00 GMTWhat I broke trying to write a Merkle treehttps://kindkang.pages.dev/posts/sample-015/https://kindkang.pages.dev/posts/sample-015/What the spec says, what the code does, and where they disagree.Sun, 08 Oct 2023 00:00:00 GMTProxy patterns: transparent vs UUPS, in practicehttps://kindkang.pages.dev/posts/sample-016/https://kindkang.pages.dev/posts/sample-016/Things I wish I'd known before reading the contracts.Fri, 27 Oct 2023 00:00:00 GMTPermit2 explained for the impatienthttps://kindkang.pages.dev/posts/sample-017/https://kindkang.pages.dev/posts/sample-017/Thu, 16 Nov 2023 00:00:00 GMTWalking through an Aave liquidationhttps://kindkang.pages.dev/posts/sample-018/https://kindkang.pages.dev/posts/sample-018/Tue, 05 Dec 2023 00:00:00 GMTTracing a calldata-only oracle attackhttps://kindkang.pages.dev/posts/sample-019/https://kindkang.pages.dev/posts/sample-019/Sun, 24 Dec 2023 00:00:00 GMTCairo for Solidity peoplehttps://kindkang.pages.dev/posts/sample-020/https://kindkang.pages.dev/posts/sample-020/Fri, 12 Jan 2024 00:00:00 GMTMove's resource model in one diagramhttps://kindkang.pages.dev/posts/sample-021/https://kindkang.pages.dev/posts/sample-021/A practical look at the parts that surprised me.Wed, 31 Jan 2024 00:00:00 GMTWhat the EIP-1559 base fee actually doeshttps://kindkang.pages.dev/posts/sample-022/https://kindkang.pages.dev/posts/sample-022/Notes from rebuilding it the long way.Mon, 19 Feb 2024 00:00:00 GMTReading EVM bytecode without cryinghttps://kindkang.pages.dev/posts/sample-023/https://kindkang.pages.dev/posts/sample-023/What the spec says, what the code does, and where they disagree.Sat, 09 Mar 2024 00:00:00 GMTThree patterns I see in bad audit reportshttps://kindkang.pages.dev/posts/sample-024/https://kindkang.pages.dev/posts/sample-024/Things I wish I'd known before reading the contracts.Thu, 28 Mar 2024 00:00:00 GMTWhy I stopped trusting `block.timestamp`https://kindkang.pages.dev/posts/sample-025/https://kindkang.pages.dev/posts/sample-025/Tue, 16 Apr 2024 00:00:00 GMTState pruning, archive nodes, and youhttps://kindkang.pages.dev/posts/sample-026/https://kindkang.pages.dev/posts/sample-026/Sun, 05 May 2024 00:00:00 GMTBuilding a tiny zkVM from scratchhttps://kindkang.pages.dev/posts/sample-027/https://kindkang.pages.dev/posts/sample-027/Fri, 24 May 2024 00:00:00 GMTFrame protocol primerhttps://kindkang.pages.dev/posts/sample-028/https://kindkang.pages.dev/posts/sample-028/Wed, 12 Jun 2024 00:00:00 GMTYield aggregator design tradeoffshttps://kindkang.pages.dev/posts/sample-029/https://kindkang.pages.dev/posts/sample-029/A practical look at the parts that surprised me.Mon, 01 Jul 2024 00:00:00 GMTAccount abstraction's wallet UX problemhttps://kindkang.pages.dev/posts/sample-030/https://kindkang.pages.dev/posts/sample-030/Notes from rebuilding it the long way.Sat, 20 Jul 2024 00:00:00 GMTReading Tornado Cash's circuitshttps://kindkang.pages.dev/posts/sample-031/https://kindkang.pages.dev/posts/sample-031/What the spec says, what the code does, and where they disagree.Thu, 08 Aug 2024 00:00:00 GMTOptimistic vs ZK rollups, again, properlyhttps://kindkang.pages.dev/posts/sample-032/https://kindkang.pages.dev/posts/sample-032/Things I wish I'd known before reading the contracts.Tue, 27 Aug 2024 00:00:00 GMTHow I write fuzz tests for invariantshttps://kindkang.pages.dev/posts/sample-033/https://kindkang.pages.dev/posts/sample-033/Mon, 16 Sep 2024 00:00:00 GMTSlither rules I find genuinely usefulhttps://kindkang.pages.dev/posts/sample-034/https://kindkang.pages.dev/posts/sample-034/Sat, 05 Oct 2024 00:00:00 GMTDEX aggregator routing, simplifiedhttps://kindkang.pages.dev/posts/sample-035/https://kindkang.pages.dev/posts/sample-035/Thu, 24 Oct 2024 00:00:00 GMTNotes on Merkle Patricia trieshttps://kindkang.pages.dev/posts/sample-036/https://kindkang.pages.dev/posts/sample-036/Tue, 12 Nov 2024 00:00:00 GMTComparing on-chain governance modelshttps://kindkang.pages.dev/posts/sample-037/https://kindkang.pages.dev/posts/sample-037/A practical look at the parts that surprised me.Sun, 01 Dec 2024 00:00:00 GMTSolana account model from an EVM mindsethttps://kindkang.pages.dev/posts/sample-038/https://kindkang.pages.dev/posts/sample-038/Notes from rebuilding it the long way.Fri, 20 Dec 2024 00:00:00 GMTWhy most bridges are insurance productshttps://kindkang.pages.dev/posts/sample-039/https://kindkang.pages.dev/posts/sample-039/What the spec says, what the code does, and where they disagree.Wed, 08 Jan 2025 00:00:00 GMTPyth vs Chainlink, structurallyhttps://kindkang.pages.dev/posts/sample-040/https://kindkang.pages.dev/posts/sample-040/Things I wish I'd known before reading the contracts.Mon, 27 Jan 2025 00:00:00 GMTCancun upgrade, what changed for usershttps://kindkang.pages.dev/posts/sample-041/https://kindkang.pages.dev/posts/sample-041/Sat, 15 Feb 2025 00:00:00 GMTBlob transactions and what they costhttps://kindkang.pages.dev/posts/sample-042/https://kindkang.pages.dev/posts/sample-042/Thu, 06 Mar 2025 00:00:00 GMTDA-only chains, the honest pitchhttps://kindkang.pages.dev/posts/sample-043/https://kindkang.pages.dev/posts/sample-043/Tue, 25 Mar 2025 00:00:00 GMTReading the Lido withdrawal queuehttps://kindkang.pages.dev/posts/sample-044/https://kindkang.pages.dev/posts/sample-044/Sun, 13 Apr 2025 00:00:00 GMTWhat MEV redistribution actually looks likehttps://kindkang.pages.dev/posts/sample-045/https://kindkang.pages.dev/posts/sample-045/A practical look at the parts that surprised me.Fri, 02 May 2025 00:00:00 GMTProto-danksharding for the impatienthttps://kindkang.pages.dev/posts/sample-046/https://kindkang.pages.dev/posts/sample-046/Notes from rebuilding it the long way.Wed, 21 May 2025 00:00:00 GMTStablecoin peg defense, observedhttps://kindkang.pages.dev/posts/sample-047/https://kindkang.pages.dev/posts/sample-047/What the spec says, what the code does, and where they disagree.Mon, 09 Jun 2025 00:00:00 GMTA short tour of intent-based architectureshttps://kindkang.pages.dev/posts/sample-048/https://kindkang.pages.dev/posts/sample-048/Things I wish I'd known before reading the contracts.Sat, 28 Jun 2025 00:00:00 GMTReading Curve's pool mathhttps://kindkang.pages.dev/posts/sample-049/https://kindkang.pages.dev/posts/sample-049/Fri, 18 Jul 2025 00:00:00 GMTHow Synthetix v3 markets composehttps://kindkang.pages.dev/posts/sample-050/https://kindkang.pages.dev/posts/sample-050/Wed, 06 Aug 2025 00:00:00 GMTConcentrated liquidity, the under-discussed riskshttps://kindkang.pages.dev/posts/sample-051/https://kindkang.pages.dev/posts/sample-051/Mon, 25 Aug 2025 00:00:00 GMTWithdrawal credentials and validator lifehttps://kindkang.pages.dev/posts/sample-052/https://kindkang.pages.dev/posts/sample-052/Sat, 13 Sep 2025 00:00:00 GMTSoulbound tokens, what surviveshttps://kindkang.pages.dev/posts/sample-053/https://kindkang.pages.dev/posts/sample-053/A practical look at the parts that surprised me.Thu, 02 Oct 2025 00:00:00 GMTReading Optimism's fault proofhttps://kindkang.pages.dev/posts/sample-054/https://kindkang.pages.dev/posts/sample-054/Notes from rebuilding it the long way.Tue, 21 Oct 2025 00:00:00 GMTCross-chain replay, once morehttps://kindkang.pages.dev/posts/sample-055/https://kindkang.pages.dev/posts/sample-055/What the spec says, what the code does, and where they disagree.Sun, 09 Nov 2025 00:00:00 GMTFoundry vs Hardhat, in 2026https://kindkang.pages.dev/posts/sample-056/https://kindkang.pages.dev/posts/sample-056/Things I wish I'd known before reading the contracts.Fri, 28 Nov 2025 00:00:00 GMTReading Aave v3 risk parametershttps://kindkang.pages.dev/posts/sample-057/https://kindkang.pages.dev/posts/sample-057/Wed, 17 Dec 2025 00:00:00 GMTWhy your invariant test is too kindhttps://kindkang.pages.dev/posts/sample-058/https://kindkang.pages.dev/posts/sample-058/Mon, 05 Jan 2026 00:00:00 GMTWhat account abstraction does to gas marketshttps://kindkang.pages.dev/posts/sample-059/https://kindkang.pages.dev/posts/sample-059/Sat, 24 Jan 2026 00:00:00 GMTBridges and the narrative of finalityhttps://kindkang.pages.dev/posts/sample-060/https://kindkang.pages.dev/posts/sample-060/Thu, 12 Feb 2026 00:00:00 GMTNotes on building a price oracle, badlyhttps://kindkang.pages.dev/posts/sample-061/https://kindkang.pages.dev/posts/sample-061/A practical look at the parts that surprised me.Tue, 03 Mar 2026 00:00:00 GMTReading the EigenLayer slasherhttps://kindkang.pages.dev/posts/sample-062/https://kindkang.pages.dev/posts/sample-062/Notes from rebuilding it the long way.Sun, 22 Mar 2026 00:00:00 GMTSubgraphs, when they're worth ithttps://kindkang.pages.dev/posts/sample-063/https://kindkang.pages.dev/posts/sample-063/What the spec says, what the code does, and where they disagree.Fri, 10 Apr 2026 00:00:00 GMTA small note on revert reason encodinghttps://kindkang.pages.dev/posts/sample-064/https://kindkang.pages.dev/posts/sample-064/Things I wish I'd known before reading the contracts.Thu, 30 Apr 2026 00:00:00 GMTThe day a `safeTransferFrom` ate our liquidityhttps://kindkang.pages.dev/posts/sample-erc777-reentrancy/https://kindkang.pages.dev/posts/sample-erc777-reentrancy/A vault drain that started with a 3am page and ended with a long, calm reading of the ERC777 spec.Wed, 18 Mar 2026 00:00:00 GMTAn interactive Taiji, embedded with MDXhttps://kindkang.pages.dev/posts/sample-taiji-mdx/https://kindkang.pages.dev/posts/sample-taiji-mdx/Demo of an interactive React component embedded inside an MDX post.Wed, 22 Apr 2026 00:00:00 GMT