Pith Number

pith:COHG34GT

pith:2005:COHG34GTFIVKWKFKFXQQFXBL6P

not attested not anchored not stored refs pending

The first optical validation of an XLEO: a detection in the XMM-Newton observation of the CDFS

A. Caccianiga, P. Severgnini, R. Della Ceca, T. Maccacaro, V. Braito

arxiv:astro-ph/0502091 v1 · 2005-02-04 · 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{COHG34GTFIVKWKFKFXQQFXBL6P}

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	2026-07-04T16:50:46.427446Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

138e6df0d32a2aab28aa2de102dc2bf3c8441bd63c5ffa9c23a3429ee3e84bdd

Aliases

arxiv: astro-ph/0502091 · arxiv_version: astro-ph/0502091v1 · doi: 10.48550/arxiv.astro-ph/0502091 · pith_short_12: COHG34GTFIVK · pith_short_16: COHG34GTFIVKWKFK · pith_short_8: COHG34GT

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/COHG34GTFIVKWKFKFXQQFXBL6P \
  | 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: 138e6df0d32a2aab28aa2de102dc2bf3c8441bd63c5ffa9c23a3429ee3e84bdd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f268b762df569e47e082da08b8f5e96d0a788a89bcf122ea7f9da516985eec52",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-02-04T10:17:30Z",
    "title_canon_sha256": "41acc53af4f24960eb35161a79bbfaf62696aed36f22a0b5e9f962de075b2c5a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0502091",
    "kind": "arxiv",
    "version": 1
  }
}