Pith Number

pith:MQMLACX7

pith:2005:MQMLACX7XZSQXNMZSKSIFPD4BW

not attested not anchored not stored refs pending

Spectral Evolution of a Luminous Compact X-Ray Source in NGC 253 with Chandra and XMM-Newton

Aya Kubota, Kazuo Makishima, Masahiko Sugiho, Tadayuki Takahashi, Takaaki Tanaka

arxiv:astro-ph/0506632 v1 · 2005-06-27 · 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{MQMLACX7XZSQXNMZSKSIFPD4BW}

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	2026-05-18T01:40:33.881017Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6418b00affbe650bb59992a482bc7c0d98d97a495188ba4935437c722c4ff9df

Aliases

arxiv: astro-ph/0506632 · arxiv_version: astro-ph/0506632v1 · doi: 10.48550/arxiv.astro-ph/0506632 · pith_short_12: MQMLACX7XZSQ · pith_short_16: MQMLACX7XZSQXNMZ · pith_short_8: MQMLACX7

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/MQMLACX7XZSQXNMZSKSIFPD4BW \
  | 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: 6418b00affbe650bb59992a482bc7c0d98d97a495188ba4935437c722c4ff9df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc8c7037a5486d975a24cc8c240490f629cf1f0757e053a4871452a10563d3d1",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-06-27T08:11:27Z",
    "title_canon_sha256": "cd819f43e14f6434cdc027e629a70cefaf0cb0c1a3825f48db02a0f9cd316c00"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0506632",
    "kind": "arxiv",
    "version": 1
  }
}