CodeSampleX

Sample

wasip2 1.0.4+wasi-0.2.12

Verified sample for cargo wasip2 1.0.4+wasi-0.2.12. The contract ran on rust 1 · linux alpine/x64 · docker and passed: Datetime represents wall clock…

sha256:62a634c2e8d9e69dc1f42aab62536ae546571a3951029e595b82a455b0e84926

This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people. MIT-0

Execution evidence

The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.

Evidence basis
Signed contract pass
Verification receipts
1
Signing keys that built it
1
Declared environment linux · alpine · musl x64 cargo

Verification-run environments

Environment Contract Stages Run
rust 1 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · cargo@1rust:1-alpine@sha256:a10e64dd139b…
2026-09-19

Case

HOW
Goal
verify pkg:cargo/wasip2@1.0.4+wasi-0.2.12
Packages
Created
2026-09-18T10:26:15Z

Contract

  1. Datetime represents wall clock timestamps with seconds and nanoseconds
  2. DescriptorType differentiates filesystem entry kinds
  3. DescriptorFlags bitflags compose read and write access permissions
  4. OpenFlags bitflags configure file creation and truncation modes
  5. Method distinguishes standard HTTP verbs and custom methods
  6. Scheme distinguishes HTTP, HTTPS and custom URI schemes
  7. StreamError enumerates stream termination states

Files

  • Cargo.lock
  • Cargo.toml
  • PROMPT.md
  • csx.json
  • spec.json
  • src/lib.rs
  • test/contract.rs

Download the source artifact (tar.gz)

Source

Cargo.lock
# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
version = 4

[[package]]
name = "bitflags"
version = "2.13.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3ded4057c258ba199e2d26386d3af3780957ecaee6c4ef4041c6b4b8b97c0b06"

[[package]]
name = "sample-wasip2"
version = "1.0.0"
dependencies = [
 "wasip2",
]

[[package]]
name = "wasip2"
version = "1.0.4+wasi-0.2.12"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b67efb37e106e55ce722a510d6b5f9c17f083e5fc79afc2badeb12cc313d9487"
dependencies = [
 "wit-bindgen",
]

[[package]]
name = "wit-bindgen"
version = "0.57.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1ebf944e87a7c253233ad6766e082e3cd714b5d03812acc24c318f549614536e"
dependencies = [
 "bitflags",
]
Cargo.toml
[package]
name = "sample-wasip2"
version = "1.0.0"
edition = "2021"
publish = false

[dependencies]
wasip2 = "=1.0.4"

[[bin]]
name = "contract"
path = "test/contract.rs"
PROMPT.md
Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify pkg:cargo/wasip2@1.0.4+wasi-0.2.12
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:cargo/wasip2@1.0.4+wasi-0.2.12

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.
csx.json
{"case":{"caseId":"case:sha256:e6858cb48ef7b9fac6ebcb2bec81d142a5a0b8e6f4cbff26706749ced1ac98a6","contract":["Datetime represents wall clock timestamps with seconds and nanoseconds","DescriptorType differentiates filesystem entry kinds","DescriptorFlags bitflags compose read and write access permissions","OpenFlags bitflags configure file creation and truncation modes","Method distinguishes standard HTTP verbs and custom methods","Scheme distinguishes HTTP, HTTPS and custom URI schemes","StreamError enumerates stream termination states"],"goal":"verify pkg:cargo/wasip2@1.0.4+wasi-0.2.12","kind":"HOW","packages":["pkg:cargo/wasip2@1.0.4+wasi-0.2.12"],"schemaVersion":1},"contractCommand":["cargo","run","--offline"],"environment":{"arch":"x64","distro":"alpine","ecosystem":"cargo","libc":"musl","os":"linux","packageManager":"cargo","schemaVersion":1},"license":"MIT-0","packages":["pkg:cargo/wasip2@1.0.4+wasi-0.2.12"],"schemaVersion":1,"subject":"pkg:cargo/wasip2@1.0.4+wasi-0.2.12","verifierAdapter":"cargo@1"}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify pkg:cargo/wasip2@1.0.4+wasi-0.2.12",
  "kind": "HOW",
  "packages": [
    "pkg:cargo/wasip2@1.0.4+wasi-0.2.12"
  ]
}
src/lib.rs
//! Clean-room verification sample for wasip2.

pub use wasip2::*;
test/contract.rs
fn main() {
    // 1. Datetime represents wall clock timestamps with seconds and nanoseconds
    let dt = wasip2::clocks::wall_clock::Datetime {
        seconds: 1726650000,
        nanoseconds: 500_000_000,
    };
    assert_eq!(dt.seconds, 1726650000);
    assert_eq!(dt.nanoseconds, 500_000_000);

    // 2. DescriptorType differentiates filesystem entry kinds
    let reg = wasip2::filesystem::types::DescriptorType::RegularFile;
    let dir = wasip2::filesystem::types::DescriptorType::Directory;
    let sym = wasip2::filesystem::types::DescriptorType::SymbolicLink;
    assert_ne!(reg, dir);
    assert_ne!(reg, sym);
    assert_eq!(reg, wasip2::filesystem::types::DescriptorType::RegularFile);

    // 3. DescriptorFlags bitflags compose read and write access permissions
    let flags = wasip2::filesystem::types::DescriptorFlags::READ | wasip2::filesystem::types::DescriptorFlags::WRITE;
    assert!(flags.contains(wasip2::filesystem::types::DescriptorFlags::READ));
    assert!(flags.contains(wasip2::filesystem::types::DescriptorFlags::WRITE));
    assert!(!flags.contains(wasip2::filesystem::types::DescriptorFlags::MUTATE_DIRECTORY));

    // 4. OpenFlags bitflags configure file creation and truncation modes
    let oflags = wasip2::filesystem::types::OpenFlags::CREATE | wasip2::filesystem::types::OpenFlags::TRUNCATE;
    assert!(oflags.contains(wasip2::filesystem::types::OpenFlags::CREATE));
    assert!(oflags.contains(wasip2::filesystem::types::OpenFlags::TRUNCATE));
    assert!(!oflags.contains(wasip2::filesystem::types::OpenFlags::DIRECTORY));

    // 5. Method distinguishes standard HTTP verbs and custom methods
    let get = wasip2::http::types::Method::Get;
    let other = wasip2::http::types::Method::Other("PATCH".into());
    assert!(matches!(get, wasip2::http::types::Method::Get));
    match other {
        wasip2::http::types::Method::Other(s) => assert_eq!(s, "PATCH"),
        _ => panic!("expected custom method"),
    }

    // 6. Scheme distinguishes HTTP, HTTPS and custom URI schemes
    let https = wasip2::http::types::Scheme::Https;
    let custom = wasip2::http::types::Scheme::Other("ws".into());
    assert!(matches!(https, wasip2::http::types::Scheme::Https));
    match custom {
        wasip2::http::types::Scheme::Other(s) => assert_eq!(s, "ws"),
        _ => panic!("expected custom scheme"),
    }

    // 7. StreamError enumerates stream termination states
    let closed = wasip2::io::streams::StreamError::Closed;
    assert!(matches!(closed, wasip2::io::streams::StreamError::Closed));

    println!("All wasip2 contract assertions passed successfully.");
}

Origin Seeder

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