Pith Number

pith:E2PW3UQY

pith:2004:E2PW3UQYZCRCI6C2T2UX2FGM3D

not attested not anchored not stored refs pending

The HI Content of Compact Groups of Galaxies

D. G. Barnes, D. J. Pisano, J. B. Stevens, M. J. Drinkwater, R. L. Webster

arxiv:astro-ph/0406007 v1 · 2004-06-01 · 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{E2PW3UQYZCRCI6C2T2UX2FGM3D}

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	2026-07-04T16:43:52.922902Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

269f6dd218c8a224785a9ea97d14ccd8eda4a51f09967e940f36a3adab245cae

Aliases

arxiv: astro-ph/0406007 · arxiv_version: astro-ph/0406007v1 · doi: 10.48550/arxiv.astro-ph/0406007 · pith_short_12: E2PW3UQYZCRC · pith_short_16: E2PW3UQYZCRCI6C2 · pith_short_8: E2PW3UQY

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/E2PW3UQYZCRCI6C2T2UX2FGM3D \
  | 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: 269f6dd218c8a224785a9ea97d14ccd8eda4a51f09967e940f36a3adab245cae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cb28fe396bfd936c03abbedabbda2d749e657d809020102d2b3adc3168777e26",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-06-01T02:39:40Z",
    "title_canon_sha256": "f9177c659a02bdaadcf1defea1dfa9610dffae444a9d7d4ce1c1d3dac39a2106"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0406007",
    "kind": "arxiv",
    "version": 1
  }
}