Pith Number

pith:QACIYPKN

pith:2003:QACIYPKNVAKC2OEGPIAMMWEIMN

not attested not anchored not stored refs pending

XMM-Newton observations of 3C 273

C. Done, J.N. Reeves, K.L. Page, M.J.L. Turner, M. Stuhlinger, P.T. O'Brien, S. Sembay

arxiv:astro-ph/0312148 v1 · 2003-12-05 · 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{QACIYPKNVAKC2OEGPIAMMWEIMN}

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	2026-07-04T15:20:12.927067Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80048c3d4da8142d38867a00c6588863562845f9fdc7dc021d2d0d832f8d8145

Aliases

arxiv: astro-ph/0312148 · arxiv_version: astro-ph/0312148v1 · doi: 10.48550/arxiv.astro-ph/0312148 · pith_short_12: QACIYPKNVAKC · pith_short_16: QACIYPKNVAKC2OEG · pith_short_8: QACIYPKN

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/QACIYPKNVAKC2OEGPIAMMWEIMN \
  | 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: 80048c3d4da8142d38867a00c6588863562845f9fdc7dc021d2d0d832f8d8145

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d847b071b996264d609456b43c74bd65dca97fe8fd3c580bb9b2b5d2ece3eb8e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-12-05T09:03:27Z",
    "title_canon_sha256": "a23a8f73c3a546b1959952b70ec3c8c70bf64fd8f97f5a042c30e80e0fa94c7a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0312148",
    "kind": "arxiv",
    "version": 1
  }
}