Sample
golang.org/x/net v0.59.0
Verified sample for golang golang.org/x/net v0.59.0. The contract ran on go 1.26 · linux debian/x64 · docker and passed: atom.Body is a non-zero Atom…
sha256:8b2ac88ca38774bfba7ba4ec21946d7c882b8af3d05ff9e5b40c7a2327b2caf2
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 24 · ubuntu · glibc 2.39 x64 go
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| go 1.26 · linux debian/x64 · docker ed25519:c1973797be207ac4 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · golang@1golang:1.26@sha256:e30143be198a… |
2026-09-14 |
Case
HOW- Goal
- verify pkg:golang/golang.org/x/net@v0.59.0
- Packages
- Created
- 2026-09-14T09:05:27Z
Contract
- atom.Body is a non-zero Atom representing the HTML body tag with string value "body"
- atom.Lookup with byte slice "body" returns atom.Body and lookup with uppercase "BODY" returns 0
- atom.String with byte slice "body" returns string "body"
- html.Parse resolves the <body> element node with DataAtom equal to atom.Body and Data equal to "body"
- html.Node constructed with DataAtom atom.Body renders as valid HTML body element
- atom.Body is distinct from other HTML tag atoms including atom.Head, atom.Html, and atom.Div
Files
- PROMPT.md
- csx.json
- go.mod
- go.sum
- main.go
- spec.json
- test/contract.go
Source
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:golang/golang.org/x/net@v0.59.0
Kind: HOW
Use EXACTLY these public packages and versions:
- pkg:golang/golang.org/x/net@v0.59.0
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.
{"case":{"caseId":"case:sha256:96ead3d39c662eafe8ca6ab84eb76f3eb355d33be670c03bddc29d316c79e8c3","contract":["atom.Body is a non-zero Atom representing the HTML body tag with string value \"body\"","atom.Lookup with byte slice \"body\" returns atom.Body and lookup with uppercase \"BODY\" returns 0","atom.String with byte slice \"body\" returns string \"body\"","html.Parse resolves the \u003cbody\u003e element node with DataAtom equal to atom.Body and Data equal to \"body\"","html.Node constructed with DataAtom atom.Body renders as valid HTML body element","atom.Body is distinct from other HTML tag atoms including atom.Head, atom.Html, and atom.Div"],"goal":"verify pkg:golang/golang.org/x/net@v0.59.0","kind":"HOW","packages":["pkg:golang/golang.org/x/net@v0.59.0"],"schemaVersion":1},"contractCommand":["go","run","./test"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"golang","libc":"glibc","libcVersion":"2.39","os":"linux","osVersionBucket":"24","packageManager":"go","schemaVersion":1},"license":"MIT-0","packages":["pkg:golang/golang.org/x/net@v0.59.0"],"schemaVersion":1,"subject":"pkg:golang/golang.org/x/net@v0.59.0","verifierAdapter":"golang@1"}
module example.com/sample
go 1.26.0
require golang.org/x/net v0.59.0
golang.org/x/net v0.59.0 h1:5zfYln+w5XCxwrnMMJPufRgNoXEaGxl0wo5GqPXyues=
golang.org/x/net v0.59.0/go.mod h1:2DA/G1UfVbCpQPeWTmMPGY7Cs2PkBkwu743bVX5PIVg=
package main
import (
"bytes"
"fmt"
"strings"
"golang.org/x/net/html"
"golang.org/x/net/html/atom"
)
func main() {
// 1. Inspect atom.Body constant and string conversion
fmt.Printf("atom.Body value: %d\n", uint32(atom.Body))
fmt.Printf("atom.Body string: %q\n", atom.Body.String())
// 2. Lookup atom by byte slice
lookedUp := atom.Lookup([]byte("body"))
fmt.Printf("Lookup(\"body\") == atom.Body: %t\n", lookedUp == atom.Body)
// 3. Parse HTML and locate node with atom.Body
raw := `<!DOCTYPE html><html><head><title>Demo</title></head><body><h1>Hello</h1><p>CodeSampleX</p></body></html>`
doc, err := html.Parse(strings.NewReader(raw))
if err != nil {
panic(err)
}
var bodyNode *html.Node
var findBody func(*html.Node)
findBody = func(n *html.Node) {
if n.Type == html.ElementNode && n.DataAtom == atom.Body {
bodyNode = n
return
}
for c := n.FirstChild; c != nil; c = c.NextSibling {
findBody(c)
if bodyNode != nil {
return
}
}
}
findBody(doc)
if bodyNode != nil {
fmt.Printf("Found body node with DataAtom: %q, Data: %q\n", bodyNode.DataAtom, bodyNode.Data)
}
// 4. Construct a new element using atom.Body and render
newBody := &html.Node{
Type: html.ElementNode,
DataAtom: atom.Body,
Data: atom.Body.String(),
}
p := &html.Node{
Type: html.ElementNode,
DataAtom: atom.P,
Data: atom.P.String(),
}
text := &html.Node{
Type: html.TextNode,
Data: "Sample content",
}
p.AppendChild(text)
newBody.AppendChild(p)
var buf bytes.Buffer
if err := html.Render(&buf, newBody); err != nil {
panic(err)
}
fmt.Printf("Rendered HTML:\n%s\n", buf.String())
}
{
"schemaVersion": 1,
"goal": "verify pkg:golang/golang.org/x/net@v0.59.0",
"kind": "HOW",
"packages": [
"pkg:golang/golang.org/x/net@v0.59.0"
]
}
package main
import (
"bytes"
"fmt"
"os"
"strings"
"golang.org/x/net/html"
"golang.org/x/net/html/atom"
)
func main() {
// 1. atom.Body is a non-zero Atom representing the HTML body tag with string value "body"
if atom.Body == 0 {
fmt.Fprintf(os.Stderr, "Contract 1 failed: atom.Body must be non-zero\n")
os.Exit(1)
}
if atom.Body.String() != "body" {
fmt.Fprintf(os.Stderr, "Contract 1 failed: atom.Body.String() expected %q, got %q\n", "body", atom.Body.String())
os.Exit(1)
}
// 2. atom.Lookup with byte slice "body" returns atom.Body and lookup with uppercase "BODY" returns 0
lookupLower := atom.Lookup([]byte("body"))
if lookupLower != atom.Body {
fmt.Fprintf(os.Stderr, "Contract 2 failed: atom.Lookup([]byte(\"body\")) expected atom.Body, got %v\n", lookupLower)
os.Exit(1)
}
lookupUpper := atom.Lookup([]byte("BODY"))
if lookupUpper != 0 {
fmt.Fprintf(os.Stderr, "Contract 2 failed: atom.Lookup([]byte(\"BODY\")) expected 0, got %v\n", lookupUpper)
os.Exit(1)
}
// 3. atom.String with byte slice "body" returns string "body"
str := atom.String([]byte("body"))
if str != "body" {
fmt.Fprintf(os.Stderr, "Contract 3 failed: atom.String([]byte(\"body\")) expected %q, got %q\n", "body", str)
os.Exit(1)
}
// 4. html.Parse resolves the <body> element node with DataAtom equal to atom.Body and Data equal to "body"
rawHTML := `<!DOCTYPE html><html><head><title>Contract</title></head><body><div id="content"><p>Test</p></div></body></html>`
doc, err := html.Parse(strings.NewReader(rawHTML))
if err != nil {
fmt.Fprintf(os.Stderr, "Contract 4 failed: html.Parse error: %v\n", err)
os.Exit(1)
}
var foundBody *html.Node
var walk func(*html.Node)
walk = func(n *html.Node) {
if n.Type == html.ElementNode && n.DataAtom == atom.Body {
foundBody = n
return
}
for c := n.FirstChild; c != nil; c = c.NextSibling {
walk(c)
if foundBody != nil {
return
}
}
}
walk(doc)
if foundBody == nil {
fmt.Fprintf(os.Stderr, "Contract 4 failed: <body> element node with atom.Body not found in parsed tree\n")
os.Exit(1)
}
if foundBody.Data != "body" {
fmt.Fprintf(os.Stderr, "Contract 4 failed: <body> element node Data expected %q, got %q\n", "body", foundBody.Data)
os.Exit(1)
}
// 5. html.Node constructed with DataAtom atom.Body renders as valid HTML body element
customBody := &html.Node{
Type: html.ElementNode,
DataAtom: atom.Body,
Data: atom.Body.String(),
}
child := &html.Node{
Type: html.ElementNode,
DataAtom: atom.Span,
Data: "span",
}
customBody.AppendChild(child)
var rendered bytes.Buffer
if err := html.Render(&rendered, customBody); err != nil {
fmt.Fprintf(os.Stderr, "Contract 5 failed: html.Render error: %v\n", err)
os.Exit(1)
}
expectedHTML := "<body><span></span></body>"
if rendered.String() != expectedHTML {
fmt.Fprintf(os.Stderr, "Contract 5 failed: rendered HTML expected %q, got %q\n", expectedHTML, rendered.String())
os.Exit(1)
}
// 6. atom.Body is distinct from other HTML tag atoms including atom.Head, atom.Html, and atom.Div
if atom.Body == atom.Head || atom.Body == atom.Html || atom.Body == atom.Div {
fmt.Fprintf(os.Stderr, "Contract 6 failed: atom.Body must be distinct from atom.Head, atom.Html, atom.Div\n")
os.Exit(1)
}
fmt.Println("PASS: all pkg:golang/golang.org/x/net@v0.59.0 contracts satisfied")
}
Origin Seeder
anonymous