Pith Number

pith:PHHMAEKY

pith:2003:PHHMAEKYKI7F3XHY2NXPIMO3TL

not attested not anchored not stored refs pending

An X-ray Atlas of Groups of Galaxies

David Burstein, David S. Davis, John S. Mulchaey, Richard F. Mushotzky

arxiv:astro-ph/0302393 v1 · 2003-02-19 · 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{PHHMAEKYKI7F3XHY2NXPIMO3TL}

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	2026-05-18T01:07:33.800198Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

79cec01158523e5ddcf8d36ef431db9acaf5254349036abd1aae08aeb4ca8a93

Aliases

arxiv: astro-ph/0302393 · arxiv_version: astro-ph/0302393v1 · doi: 10.48550/arxiv.astro-ph/0302393 · pith_short_12: PHHMAEKYKI7F · pith_short_16: PHHMAEKYKI7F3XHY · pith_short_8: PHHMAEKY

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/PHHMAEKYKI7F3XHY2NXPIMO3TL \
  | 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: 79cec01158523e5ddcf8d36ef431db9acaf5254349036abd1aae08aeb4ca8a93

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3d3119a2d74e6cd63aeb703771e3a00f5f57032c481c1f44ba2450649d2af650",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-02-19T19:07:06Z",
    "title_canon_sha256": "37d5a45e974c4163877ea293550140a6044ce8abf19fe583c75c37655663b0e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0302393",
    "kind": "arxiv",
    "version": 1
  }
}