Pith Number

pith:NFABXLYS

pith:2010:NFABXLYSCRN23226W6HU3ZOARU

not attested not anchored not stored refs pending

Dark Radiation Emerging After Big Bang Nucleosynthesis?

Joel Meyers, Willy Fischler

arxiv:1011.3501 v3 · 2010-11-15 · astro-ph.CO · hep-ph · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NFABXLYSCRN23226W6HU3ZOARU}

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.

Cited by

2 papers in Pith

CMB-S4 Science Case, Reference Design, and Project Plan

The DESI Experiment Part I: Science,Targeting, and Survey Design

Receipt and verification

First computed	2026-05-18T04:22:40.103642Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

69401baf12145badeb5eb78f4de5c08d188ac6eca7f62ed3d0caa15232c02c23

Aliases

arxiv: 1011.3501 · arxiv_version: 1011.3501v3 · doi: 10.48550/arxiv.1011.3501 · pith_short_12: NFABXLYSCRN2 · pith_short_16: NFABXLYSCRN23226 · pith_short_8: NFABXLYS

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/NFABXLYSCRN23226W6HU3ZOARU \
  | 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: 69401baf12145badeb5eb78f4de5c08d188ac6eca7f62ed3d0caa15232c02c23

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "17d6cb655b5e2a88086f053b3d2c495be0c1ad6c0883432c0edad5f451208318",
    "cross_cats_sorted": [
      "hep-ph",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-11-15T20:40:43Z",
    "title_canon_sha256": "c74c7eb589819c33a28b7a43d7b32d47b6b3ab25568e7f94356552384893854c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1011.3501",
    "kind": "arxiv",
    "version": 3
  }
}