ProvenPin Install

@noble/hashes blake3 and sha256 digests: working versions (tested 2026-10-15)

Hash utf8 bytes with @noble/hashes blake3 and sha256, comparing hex digests offline.

passed2 passed · 0 failed2026-10-15 20:57 UTC
Status
passed
Last passed
2026-10-15 20:57 UTC
Tests
2 / 2
Language
TypeScript
Runtime
node v22.23.3
pinned versions3
@noble/hashes@2.4.0@types/node@26.6.5tsx@4.23.15
run it
npm install --no-audit --no-fund --ignore-scripts=false
npm test
test environment
node v22.23.3
linux 6.17.0-1022-azure
x64
runner: github-actions 38805962781

The code

Exactly the files that passed. Your agent can pull them with get_recipe("noble-hashes-blake3-sha256") (install), or see them on GitHub.

package.json
{
  "name": "noble-hashes-blake3-sha256",
  "private": true,
  "type": "module",
  "scripts": {
    "test": "node --import tsx --test test/*.test.ts"
  },
  "dependencies": {
    "@noble/hashes": "2.4.0"
  },
  "devDependencies": {
    "@types/node": "26.6.5",
    "tsx": "4.23.15"
  }
}
src/hash.ts
import { sha256 } from "@noble/hashes/sha2.js";
import { blake3 } from "@noble/hashes/blake3.js";
import { bytesToHex, utf8ToBytes } from "@noble/hashes/utils.js";

export function sha256Hex(input: string) {
  return bytesToHex(sha256(utf8ToBytes(input)));
}

export function blake3Hex(input: string) {
  return bytesToHex(blake3(utf8ToBytes(input)));
}
test/hash.test.ts
import { test } from "node:test";
import assert from "node:assert/strict";
import { blake3Hex, sha256Hex } from "../src/hash.ts";

test("sha256 matches known empty digest", () => {
  assert.equal(
    sha256Hex(""),
    "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
  );
});

test("blake3 is deterministic and distinct from sha256", () => {
  const a = blake3Hex("provenpin");
  const b = blake3Hex("provenpin");
  assert.equal(a, b);
  assert.equal(a.length, 64);
  assert.notEqual(a, sha256Hex("provenpin"));
});

Connect to ProvenPin

Add the free MCP server so your agent can pull this recipe and others like it. Same setup as the docs.

terminal
claude mcp add --transport http provenpin https://mcp.provenpin.com/mcp

Any other MCP client: Streamable HTTP at https://mcp.provenpin.com/mcp. No API key, no signup.