Pith Number

pith:GBP73MOK

pith:2003:GBP73MOKFFPMTN42VK44MUAVNP

not attested not anchored not stored refs pending

Foregrounds for 21cm Observations of Neutral Gas at High Redshift

Katherine J. Mack (Caltech), S. Peng Oh

arxiv:astro-ph/0302099 v2 · 2003-02-05 · 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{GBP73MOKFFPMTN42VK44MUAVNP}

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	2026-07-04T16:36:26.901883Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

305ffdb1ca295ec9b79aaab9c650156bc782e8f4a984a153554cfaff3d9b203d

Aliases

arxiv: astro-ph/0302099 · arxiv_version: astro-ph/0302099v2 · doi: 10.48550/arxiv.astro-ph/0302099 · pith_short_12: GBP73MOKFFPM · pith_short_16: GBP73MOKFFPMTN42 · pith_short_8: GBP73MOK

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/GBP73MOKFFPMTN42VK44MUAVNP \
  | 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: 305ffdb1ca295ec9b79aaab9c650156bc782e8f4a984a153554cfaff3d9b203d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "545aa6580eabf177daf5e3d80347f295bc6359ce1a4a1594806b404ba326a0ff",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-02-05T21:28:52Z",
    "title_canon_sha256": "2f7048274a3aed6f0ea26bc5452dd0f8a78df6e0775ab549c3a34280b887ab38"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0302099",
    "kind": "arxiv",
    "version": 2
  }
}