Pith Number

pith:3DFXQAEY

pith:2005:3DFXQAEYMWXSTUGTQJNB3HZTW7

not attested not anchored not stored refs pending

Ionizing radiation from hydrogen recombination strongly suppresses the lithium scattering signature in the CMB

Christopher M. Hirata, Eric R. Switzer

arxiv:astro-ph/0507106 v1 · 2005-07-05 · astro-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{3DFXQAEYMWXSTUGTQJNB3HZTW7}

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	2026-07-04T17:15:43.921893Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d8cb78009865af29d0d3825a1d9f33b7c8448867f08f6e51f6faaf501f75316d

Aliases

arxiv: astro-ph/0507106 · arxiv_version: astro-ph/0507106v1 · doi: 10.48550/arxiv.astro-ph/0507106 · pith_short_12: 3DFXQAEYMWXS · pith_short_16: 3DFXQAEYMWXSTUGT · pith_short_8: 3DFXQAEY

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/3DFXQAEYMWXSTUGTQJNB3HZTW7 \
  | 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: d8cb78009865af29d0d3825a1d9f33b7c8448867f08f6e51f6faaf501f75316d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c5db8699343c21f56a8536ad6ebcfef86f08096bffa863218e1c023e33e2b1f1",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-07-05T18:15:46Z",
    "title_canon_sha256": "30b8cb20f7a3804f9b2857f18a243cc496b4f3623b8a9f6051a3e1827ff0e292"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0507106",
    "kind": "arxiv",
    "version": 1
  }
}