Pith Number

pith:WYR27FB3

pith:1993:WYR27FB3WHMRUC7GLBFEOVQDBH

not attested not anchored not stored refs pending

Background Radiation

A. Franceschini, G. de Zotti, L. Danese, L. Toffolatti, P. Mazzei

arxiv:astro-ph/9302004 v1 · 1993-02-04 · 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{WYR27FB3WHMRUC7GLBFEOVQDBH}

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	2026-07-04T14:14:25.057477Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b623af943bb1d91a0be6584a47560309e7194e87c56168d205d6fc624e54b7e6

Aliases

arxiv: astro-ph/9302004 · arxiv_version: astro-ph/9302004v1 · doi: 10.48550/arxiv.astro-ph/9302004 · pith_short_12: WYR27FB3WHMR · pith_short_16: WYR27FB3WHMRUC7G · pith_short_8: WYR27FB3

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/WYR27FB3WHMRUC7GLBFEOVQDBH \
  | 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: b623af943bb1d91a0be6584a47560309e7194e87c56168d205d6fc624e54b7e6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8037a33d3447d1ecbe856fb348199b2468a3dab2d3272c9cec00c2efa1584c08",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1993-02-04T16:55:00Z",
    "title_canon_sha256": "2a3ecb2e4ba8f6a4453f02e1e2b2e5f50970454b0d92030d06902041283344f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9302004",
    "kind": "arxiv",
    "version": 1
  }
}