Pith Number

pith:QKRQWNRK

pith:2003:QKRQWNRKCJIFXTDT57ESGKNCIV

not attested not anchored not stored refs pending

Measuring the cosmological background of relativistic particles with WMAP

Julien Lesgourgues, Patrick Crotty, Sergio Pastor

arxiv:astro-ph/0302337 v2 · 2003-02-17 · astro-ph · hep-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QKRQWNRKCJIFXTDT57ESGKNCIV}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T01:07:33.810734Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

82a30b362a12505bcc73efc92329a24579d3bc47ace15110ca6b36760d385827

Aliases

arxiv: astro-ph/0302337 · arxiv_version: astro-ph/0302337v2 · doi: 10.48550/arxiv.astro-ph/0302337 · pith_short_12: QKRQWNRKCJIF · pith_short_16: QKRQWNRKCJIFXTDT · pith_short_8: QKRQWNRK

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/QKRQWNRKCJIFXTDT57ESGKNCIV \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 82a30b362a12505bcc73efc92329a24579d3bc47ace15110ca6b36760d385827

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "506a61e07ca2efe90bcd51c963c0f05203e4095181882367f0f0e7e48e5fe5f5",
    "cross_cats_sorted": [
      "hep-ph"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-02-17T20:56:42Z",
    "title_canon_sha256": "1137fd0ef98d4da73f587457e1bb87bd3f3965b76bfcc132e7c0f893d265f8d5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0302337",
    "kind": "arxiv",
    "version": 2
  }
}