Sample
verify utf8ByteLength in pkg:npm/utf8-byte-length@1.0.5
sha256:0188fabe9ee4db4df167a36463d50b25d0d954440911531c68dd8d2ddcf5ee0b
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
node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1node:22-alpine@sha256:c610fcdfb1d5… |
2026-08-26 |
Case
HOW- Goal
- verify utf8ByteLength in pkg:npm/utf8-byte-length@1.0.5
- Packages
- Symbols
-
- utf8ByteLength
- Environment
- node 22.23.2
- Created
- 2026-08-26T11:22:35Z
Contract
- assert empty string returns zero byte length
- assert ASCII strings return byte length equal to character count
- assert two-byte UTF-8 characters calculate to two bytes per character
- assert three-byte UTF-8 characters such as CJK and currency symbols calculate to three bytes per character
- assert four-byte UTF-8 characters such as emojis calculate to four bytes per character
- assert mixed strings containing ASCII and multi-byte unicode characters return correct total byte length
- assert direct utf8ByteLength symbol invocation returns identical byte length
- assert non-string inputs throw an Error indicating input must be string
Files
- PROMPT.md
- csx.json
- index.js
- package-lock.json
- package.json
- spec.json
- test/contract.mjs
Origin Seeder
anonymous