Pith Number

pith:RNXPL2I4

pith:2003:RNXPL2I4JVMEVS2N7GJTXGYQD2

not attested not anchored not stored refs pending

A Puzzling X-Ray Source Found in the chandra Deep Field South

A. Zirm, C. Norman, G. Szokoly, J. Wang, L. Kewley, M. Nonino, P. Rosati, P. Tozzi, R. Gilli, T. Yaqoob, V. Mainieri, W. Zheng

arxiv:astro-ph/0305285 v2 · 2003-05-15 · 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{RNXPL2I4JVMEVS2N7GJTXGYQD2}

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	2026-05-18T01:40:38.895198Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8b6ef5e91c4d584acb4df9933b9b101ea8518a123003aca3830fa89b99ecc54a

Aliases

arxiv: astro-ph/0305285 · arxiv_version: astro-ph/0305285v2 · doi: 10.48550/arxiv.astro-ph/0305285 · pith_short_12: RNXPL2I4JVME · pith_short_16: RNXPL2I4JVMEVS2N · pith_short_8: RNXPL2I4

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/RNXPL2I4JVMEVS2N7GJTXGYQD2 \
  | 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: 8b6ef5e91c4d584acb4df9933b9b101ea8518a123003aca3830fa89b99ecc54a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c349c198a320b1fb35ec9166b24d3721a729abde74050039e9fde351d17968ad",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-05-15T18:46:08Z",
    "title_canon_sha256": "5bfb8b91dd9323214483a32b7f811adab735dfac3bfa461ba0adff1e9d1bf750"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0305285",
    "kind": "arxiv",
    "version": 2
  }
}