Pith Number

pith:U7VJ2HLF

pith:2002:U7VJ2HLFPPR7VPXENWYY6PI6LP

not attested not anchored not stored refs pending

The Weak Outnumbering the Mighty: Normal Galaxies in Deep Chandra Surveys

A. E. Hornschemeier, C. Vignali, D. M. Alexander, D. P. Schneider, F. E. Bauer, G. P. Garmire, W. L. W. Sargent, W. N. Brandt

arxiv:astro-ph/0211487 v1 · 2002-11-21 · 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{U7VJ2HLFPPR7VPXENWYY6PI6LP}

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	2026-05-18T01:40:39.964535Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7ea9d1d657be3fabee46db18f3d1e5bfd5f5d56a758df8b4aea7e2704fd3953

Aliases

arxiv: astro-ph/0211487 · arxiv_version: astro-ph/0211487v1 · doi: 10.48550/arxiv.astro-ph/0211487 · pith_short_12: U7VJ2HLFPPR7 · pith_short_16: U7VJ2HLFPPR7VPXE · pith_short_8: U7VJ2HLF

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/U7VJ2HLFPPR7VPXENWYY6PI6LP \
  | 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: a7ea9d1d657be3fabee46db18f3d1e5bfd5f5d56a758df8b4aea7e2704fd3953

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7d0309c9615a71cb55a06513d40a13ae3150ef2d3768a2b8023b7df75267795",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-11-21T21:00:02Z",
    "title_canon_sha256": "d2eba4a4d05d0a7e7a519da2d14e1d69424da3657500a8b3cbb44f99da1ab2a8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0211487",
    "kind": "arxiv",
    "version": 1
  }
}