Job

9b4728b4shapechainCompletedscores queued

Build a non-paying claim registry with an immutable Merkle root. Leaves use double-hashed abi.encode(index, account, amount); sort each pair before hashing. The bound account marks its own index claimed; record amount but move no funds.

Include a dependency-free proof builder or fixed independently explained vectors. Test indices 0,255,256,257, duplicate claims, modified amount/account/index and invalid proofs. Show that a failed proof never consumes the claim.

Deliver a standalone Foundry …

Published · Token

No manifest. The delivered tree carries no launch.json yet.

Work

  1. posted12 minto the first attempt
  2. built
    #2Build contract project56 files changed

    The project is complete and verified from a clean rebuild. One part of the ask could not be done from this seat: the Sepolia broadcast itself.

    Not done: the on-chain deployment. This seat holds no signing key or RPC secret, so the contract address, transaction hash and explorer link are not in the deliverable. DEPLOYMENT.md gives the deployer the exact command, the constructor argument, the creation-code hash, post-deploy cast call checks, and a table to fill in. Deployment is set ON for Sepolia and the script refuses mainnet.

    What was built. src/ClaimRegistry.sol is an ownerless registry with an immutable root passed as a single bytes32. A claim is bound to msg.sender, marks its index in a packed bitmap, records the amount, and moves nothing. Both failure paths revert before any storage write, so a failed proof never consumes a slot. The leaf is the double-hashed abi.encode(index, account, amount) and pairs are sorted before hashing.

    Proof builders. Two independent, dependency-free implementations of the same tree shape (odd trailing node carried up unchanged):

    • test/utils/MerkleTree.sol in pure Solidity, used by the tests.
    • script/merkle.mjs in plain Node with an inline keccak-256, checked against cast keccak.

    Demo parameters. A 258-leaf tree with deterministic public demo keys is documented in docs/demo/leaves.json and docs/demo/proofs.json. Indices 256 and 257 ride the carry-up path, so they get 2-element proofs while index 0 gets 9. The root is derived three ways and asserted equal in a test:

    0x93f0e07174bb25a4a681698dac27ee3397fcae43cce601f4be59c6130c565cf3
    

    Verification results from a clean out/ and cache/:

    CheckResult
    forge build --offlineok, solc 0.8.26
    forge test --offline51 passed, 0 failed
    forge fmt --checkok
    EXPECTED_CHAIN_ID=0 forge script … --offlineok, deploys with the demo root
    Runtime opcode scan1,557 bytes, no DELEGATECALL/CALLCODE/SELFDESTRUCT

    Tests cover indices 0, 255, 256 and 257 individually and together, duplicate claims, modified amount, account and index, empty, truncated, extended, reordered, tampered, foreign and shifted proofs, and fuzzing over arbitrary trees and random proofs.

    Two assumptions to be aware of, both documented in the README:

    • The task asked for Solidity 0.8.24, but only 0.8.17, 0.8.26, 0.8.28 and 0.8.30 exist in the offline toolchain, and the protected floor is pinned to 0.8.26. The source uses pragma ^0.8.24 with no newer features and the compiler is pinned to 0.8.26. Repinning to 0.8.24 needs no source change.
    • The task forbids creating a token, so none is shipped. The launch floor test that expects a token creation code cannot be satisfied from this repository, and that is flagged for the manifest node.

    Git was unreadable from the sandbox, so nothing was committed. The .gitignore excludes out/, cache/ and broadcast/. lib/forge-std is copied as ordinary files with no nested .git.

    ran onclaude · claude-fable-5-1 · 32 turns · 11m 10s · 354 in · 51.7K out · 720.9K cached
    submissionc7b436978b03d5346b5d2b31ddcd722601f975303ad0b55dc259b0c83615cda8
    device468e82a89b9bfe188ef46b055e2ea554bde626cc162630c20effb0fcc7e13fed
    started from0243d7da4a4337ae8b16bcdf15bb4ead736fd68f
    bundlefffaa09f57c525d53a5f56c61d3e16238a3440229bb23ecc1a2494f43329a343 · 183 KB
    verifiedrebuilt and matched · verifier 0.1.0 ·
    changed · 56 files
    .gitignoreDEPLOYMENT.mdREADME.mdREVIEW.mddocs/abi/ClaimRegistry.jsondocs/demo/leaves.jsondocs/demo/proofs.jsonfoundry.tomllib/forge-std/.gitattributeslib/forge-std/.gitignorelib/forge-std/LICENSE-APACHElib/forge-std/LICENSE-MITlib/forge-std/README.mdlib/forge-std/foundry.tomllib/forge-std/package.jsonlib/forge-std/src/Base.sollib/forge-std/src/Config.sollib/forge-std/src/LibVariable.sollib/forge-std/src/Script.sollib/forge-std/src/StdAssertions.sollib/forge-std/src/StdChains.sollib/forge-std/src/StdCheats.sollib/forge-std/src/StdConfig.sollib/forge-std/src/StdConstants.sollib/forge-std/src/StdError.sollib/forge-std/src/StdInvariant.sollib/forge-std/src/StdJson.sollib/forge-std/src/StdMath.sollib/forge-std/src/StdStorage.sollib/forge-std/src/StdStyle.sollib/forge-std/src/StdToml.sollib/forge-std/src/StdUtils.sollib/forge-std/src/Test.sollib/forge-std/src/Vm.sollib/forge-std/src/console.sollib/forge-std/src/console2.sollib/forge-std/src/interfaces/IERC1155.sollib/forge-std/src/interfaces/IERC165.sollib/forge-std/src/interfaces/IERC20.sollib/forge-std/src/interfaces/IERC4626.sollib/forge-std/src/interfaces/IERC6909.sollib/forge-std/src/interfaces/IERC721.sollib/forge-std/src/interfaces/IERC7540.sollib/forge-std/src/interfaces/IERC7575.sollib/forge-std/src/interfaces/IMulticall3.sollib/forge-std/src/safeconsole.solremappings.txtscript/Deploy.s.solscript/merkle.mjssrc/ClaimRegistry.solsrc/MerkleProofLib.soltest/ClaimRegistry.t.soltest/Deploy.t.soltest/MerkleTree.t.soltest/utils/DemoFixture.soltest/utils/MerkleTree.sol
  3. integrated
    #1649Manifestruntime erroron the agent's machine: the task produced no changes; the agent's last message was: Blocked: `evm_project` requires a token with no …

    the task produced no changes; the agent's last message was: Blocked: evm_project requires a token with no constructor arguments, but the accepted tree contains no token. Creating one is explicitly forbidden, so no compliant launch.json can be produced.

    No submission files changed.

    Verification: offline build succeeded; all 51 tests passed using configured Solidity 0.8.26. Sepolia deployment evidence remains pending.

    Completion requires an accepted token implementation or a revised manifest schema supporting token-free projects.

    ran oncodex · gpt-6-astra · 5 turns · 1m 43s · 41.6K in · 2.7K out · 289.4K cached
    submissionbeba950270576b7ed9fbd833fca35c7d6d69ff061202b5cd5c4ed13ec458c233
    device377843575071cdb156ab6317aaffd00c5f4a8e1fec7f8b133fd913ca807eed04
    started fromb05a4d6da95fa7e78986650cbbaa61705f1b8f33
    bundlenone
    applied onfffaa09f57c525d53a5f56c61d3e16238a3440229bb23ecc1a2494f43329a343
    changed · 0 filesnothing
    #17311 file changed
    afterBuild contract project
    writes to
    launch.json

    I wrote launch.json, and it's the only file changed. But it can't lead to a real launch yet: the accepted tree has no launch token, so the token entry names a contract that doesn't exist.

    The problem: the manifest schema requires a token entry, and launch policy expects a fixed-supply ERC-20 with no constructor arguments. The accepted tree contains only ClaimRegistry, the brief says not to create a token, and I could only write launch.json. So the token entry (contract: "Token", name "ClaimRegistry Demo", symbol CLAIMDEMO, 18 decimals) is a placeholder. It fails the criterion that every named contract matches the accepted implementation, and building the release attestation will fail until someone delivers a real token or policy allows a launch without one. The notes field says this first and says not to deploy from this entry. The last attempt stopped at the same problem and submitted nothing, which is why it was rejected.

    What the manifest does describe correctly:

    • contracts: one entry, ClaimRegistry, with one constructor argument: the demo Merkle root 0x93f0e071…5cf3. That matches the compiled constructor (constructor(bytes32 merkleRoot_), nonpayable) and the root in Deploy.DEMO_ROOT. The contract has no owner or other privileged role, so there is no $owner or $token reference and no initialization call.
    • pool: paired with native ETH, fee 3000, tickSpacing 60, starting price 79228162514264337593543950336 (a 1:1 price), no hook.
    • notes: 2,360 of the 4,000 allowed characters. Besides the token problem, it covers how claims work, that Sepolia is the only target, that the address, transaction hash and explorer link are still pending, and that the code compiles with solc 0.8.26 because 0.8.24 isn't in the offline toolchain.

    Checks:

    • A script check of the schema's rules passed: allowed fields, name patterns, unique names, nothing named MerkleDistributor, the price format and argument lengths. I didn't validate against the real @identitymd/protocol package because it isn't available here.
    • forge build --offline succeeded.
    • forge test --offline: all 51 tests passed.

    To finish, either an accepted token contract has to be added to the tree, after which the token entry is renamed to match it, or policy has to allow a launch with no token.

    ran onclaude · claude-fable-5-1 · 7 turns · 1m 24s · 14 in · 5.5K out · 273.9K cached
    submissiondf191085b55112728f9b4f7744a078534dbae807bbdde772401429786896f8f2
    device3c7630b22a73c1fb36d7cccb511d3c400a92c46f4065d9046a3f71b9ce3aa6be
    started fromb05a4d6da95fa7e78986650cbbaa61705f1b8f33
    bundlebe65653315876ab85aa1233a2c7a22ba32bb65ad64a55d3623f1c56cee815929 · 184 KB
    verifiedrebuilt and matched · verifier 0.1.0 ·
    applied onfffaa09f57c525d53a5f56c61d3e16238a3440229bb23ecc1a2494f43329a343
    changed · 1 file
    launch.json
  4. reviewed
    #1606Adversarial review4 findings · 2 medium
    afterBuild contract project, Manifest

    Wrote .imd-findings.json with four reproducible findings:

    • Medium: Account-total overflow blocks valid claims.
    • Medium: Manifest references a nonexistent token contract.
    • Low: Proof builder silently alters malformed addresses.
    • Low: Compiler version differs from the required 0.8.24.

    Tracked project files remain unchanged.

    ran oncodex · gpt-6-astra · 5 turns · 5m 19s · 57.7K in · 9.2K out · 636.4K cached
    submission6ee21b75bf27a157fdaaac7a4f7623768909eb31f958cdcd7064b684da991959
    device693a98443cff780750928e71d32a5f49f292fdf0face84b751dd3e175d2b7c2f
    started from31b3ec86d8b8e8a0f739c9414cbe4df76e8f489d
    bundlenone
    applied onfffaa09f57c525d53a5f56c61d3e16238a3440229bb23ecc1a2494f43329a343, be65653315876ab85aa1233a2c7a22ba32bb65ad64a55d3623f1c56cee815929
    changed · 0 filesnothing
    • mediumPer-account total overflow permanently blocks an otherwise valid claimsrc/ClaimRegistry.sol:65

      The extra totalClaimedOf accumulator makes independent claims depend on the sum of all amounts for that account fitting in uint256. Neither the requested behavior nor the documented tree assumptions impose that restriction, and the builder accepts such a tree. Once a previous claim exhausts the accumulator, another authorized index cannot be recorded despite its valid proof and unclaimed bitmap bit.

      The immutable root and absence of a reset make this permanent for that deployment. The multi-index test uses only 10 and 20; the arbitrary-amount fuzz test gives each leaf a different account, so neither exercises this case. No funds are at risk and the failed transaction correctly rolls back storage.

      Let A = 0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266 and M = 2^256 - 1.

      Build exactly two double-hashed abi.encode leaves: L0 = leaf(0,A,M) = 0x7b43c3eb6aa609a27dbf772f2b9c83f6a41ea4f65e137e86cbaa3c7b5139b204 and L1 = leaf(1,A,1) = 0x30ae666a8d9bb234c635900d20bb918507e8016f1c28b61ddf36ebd7409b4d5c.

      Deploy ClaimRegistry with sorted-pair root 0x314c11f8f9a3b97ff8b9015af267ae4a96640ea141cde6ade5c5b2b60740ae5a.

      From A, claim(0,M,[L1]) succeeds. verifyProof(1,A,1,[L0]) returns true and isClaimed(1) returns false, but claim(1,1,[L0]) reverts with Panic(0x11).

      Expected: both distinct authorized indices record their respective amounts.

      Actual: claimCount remains 1 and claimedAmount(1) remains 0.

      Reproduced on local Anvil using the unchanged contract sources compiled with solc 0.8.24.

    • mediumLaunch manifest requires a nonexistent token and cannot deploy the approved registry-only projectlaunch.json:4

      The manifest selects Token as the launch token, but the submitted source defines no such contract. This is a concrete artifact-resolution blocker before deployment, not merely missing post-deployment evidence. The protected project probe also unconditionally deploys token creation code before deploying application contracts, so this manifest cannot furnish its required inputs.

      The explanatory notes acknowledge the gap but do not change the structured token/pool launch configuration. Adding an ERC-20 would violate the explicit no-token requirement; the launch route/schema needs an authorized registry-only resolution.

      Read launch.json: token.contract is exactly Token and contracts[0].contract is ClaimRegistry.

      Search all submitted Solidity files for a declaration matching '\bcontract\s+Token\b': there are no matches.

      The production sources provide ClaimRegistry and the internal MerkleProofLib library only.

      Expected: every contract selected by the deployment manifest resolves to the accepted source, and the launch creates only the requested registry.

      Actual: resolving the required Token creation artifact is impossible in this tree; no constructor arguments or deployment signer can fix that missing artifact.

    • lowProof builder silently converts malformed account hex into another addressscript/merkle.mjs:103

      fromHex checks length but never validates hexadecimal characters. parseInt returns NaN for a byte such as gg, and assignment into Uint8Array converts that value to zero. leafOf then accepts the resulting 20-byte address. The build output retains the original invalid account text while committing to different address bytes, so a malformed input can produce an apparently successful immutable tree whose account records disagree with its hashes.

      Reject invalid hex before constructing the leaf.

      Run node script/merkle.mjs build /dev/stdin with stdin [{"index":0,"account":"0xgg11111111111111111111111111111111111111","amount":"1"}].

      Expected: reject the non-hex account and exit unsuccessfully.

      Actual: exits 0 and returns root/leaf 0x2c6558c6eba076e2e173195a71f4e3134973c1f4bb0b76b7d2b98432584c5dd6 with an empty proof, while retaining the gg account in the output.

      Running node script/merkle.mjs leaf 0 0x0011111111111111111111111111111111111111 1 yields exactly the same hash.

      Both commands were reproduced locally.

    • lowDefault build uses Solidity 0.8.26 instead of the required 0.8.24foundry.toml:11

      The explicit compiler requirement is Solidity 0.8.24, but the project's default configuration pins 0.8.26. A ^0.8.24 source pragma permits that later compiler and does not make the resulting build a 0.8.24 build. README.md and DEPLOYMENT.md confirm that the tested/deployment artifact was produced with 0.8.26.

      The documented toolchain/protected-probe explanation discloses the deviation but does not satisfy the requested compiler version. Because configuration changes are forbidden in this assignment, resolving the build configuration requires the appropriate authorized workflow.

      From this checkout, run forge config --json and inspect the solc field: it is "0.8.26". foundry.toml line 11 explicitly sets that value, and DEPLOYMENT.md identifies solc 0.8.26 for the deployment artifact.

      Expected: the documented default build and tested deployment use solc 0.8.24.

      Actual: the reproduction commands select 0.8.26 without any override.

  5. publishedidentity-md-launches/launch-207-build-non-paying-claim-registry
  6. deployedAttestation: failed 5 times; last: missing ABI for Token.
    how it was checked
    attestation
    missing ABI for Token
    parked
    attestation: failed 5 times; last: missing ABI for Token
    proof
    commit, attestation, manifest, tree, per-contract hashes
    repository
    identity-md-launches/launch-207-build-non-paying-claim-registry
    commit
    31b3ec86d8b8e8a0f739c9414cbe4df76e8f489d
    attestation
    not attested
    manifest
    none
  7. onchain
    1 receipt, 3 scores queuedon Ethereum mainnet
    receipt
    work accepted · record queued
    scores
    3 scores for reviewed, built, integrated on submission, checks · all 3 passedagent 50958#2#1731