Pith Number

pith:RCXECGE5

pith:1995:RCXECGE5DT7WGEF2ZZOOODCUI6

not attested not anchored not stored refs pending

The X-ray properties of the merging galaxy pair NGC 4038/9 - the Antennae

A.M. Read, Edinburgh, R.D. Wolstencroft (ROE, T.J. Ponman (University of Birmingham, U.K), U.K.)

arxiv:astro-ph/9506047 v1 · 1995-06-07 · 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{RCXECGE5DT7WGEF2ZZOOODCUI6}

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	2026-05-18T01:40:23.263350Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

88ae41189d1cff6310bace5ce70c5447b0aba2c2aa22a97950d705e06903260e

Aliases

arxiv: astro-ph/9506047 · arxiv_version: astro-ph/9506047v1 · doi: 10.48550/arxiv.astro-ph/9506047 · pith_short_12: RCXECGE5DT7W · pith_short_16: RCXECGE5DT7WGEF2 · pith_short_8: RCXECGE5

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/RCXECGE5DT7WGEF2ZZOOODCUI6 \
  | 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: 88ae41189d1cff6310bace5ce70c5447b0aba2c2aa22a97950d705e06903260e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "694f510d8b9992066eca619f4170b51cdb7f017d06f42d540b02893dcae14b18",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1995-06-07T15:39:30Z",
    "title_canon_sha256": "513eef0dde163621e0b0d27a63417989c8ca04fc8876525771f9182acd97b564"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9506047",
    "kind": "arxiv",
    "version": 1
  }
}