Pith Number

pith:K53XQWTV

pith:2005:K53XQWTVQQP3N2RLPD5CIYOM6A

not attested not anchored not stored refs pending

Extreme X-ray spectral variability in the Seyfert 2 Galaxy NGC 1365

2), (2) INAF - Arcetri, A. Baldi (1), A. Zezas (1) ((1) CfA, G. Fabbiano (1), G. Risaliti (1, Italy), M. Elvis (1), USA

arxiv:astro-ph/0503351 v1 · 2005-03-16 · 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{K53XQWTVQQP3N2RLPD5CIYOM6A}

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	2026-05-18T00:32:36.802284Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5777785a75841fb6ea2b78fa2461ccf0073bda7b10b6c9f2389e3c7e1e1b70a9

Aliases

arxiv: astro-ph/0503351 · arxiv_version: astro-ph/0503351v1 · doi: 10.48550/arxiv.astro-ph/0503351 · pith_short_12: K53XQWTVQQP3 · pith_short_16: K53XQWTVQQP3N2RL · pith_short_8: K53XQWTV

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/K53XQWTVQQP3N2RLPD5CIYOM6A \
  | 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: 5777785a75841fb6ea2b78fa2461ccf0073bda7b10b6c9f2389e3c7e1e1b70a9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bca86d0bfc05e4fd928bca290c0a5d9915e83ac61a4a48787e502312dda4d840",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-03-16T16:04:43Z",
    "title_canon_sha256": "ba526e982f22dd9a5b3de1517302842c28524ef2a3c1c0de496a0cff20b5591f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0503351",
    "kind": "arxiv",
    "version": 1
  }
}