Pith Number

pith:INKXM3QJ

pith:2010:INKXM3QJT2EG2R3HKRVKRBS4WE

not attested not anchored not stored refs pending

Variability and the X-ray/UV ratio of Active Galactic Nuclei

D. Trevese, F. Vagnetti, M. Antonucci, S. Turriziani

arxiv:1005.0144 v3 · 2010-05-02 · astro-ph.CO · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{INKXM3QJT2EG2R3HKRVKRBS4WE}

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	2026-05-18T04:40:45.068596Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4355766e099e886d4767546aa8865cb11c86990eccef2b19e1a20c12b3f0286c

Aliases

arxiv: 1005.0144 · arxiv_version: 1005.0144v3 · doi: 10.48550/arxiv.1005.0144 · pith_short_12: INKXM3QJT2EG · pith_short_16: INKXM3QJT2EG2R3H · pith_short_8: INKXM3QJ

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/INKXM3QJT2EG2R3HKRVKRBS4WE \
  | 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: 4355766e099e886d4767546aa8865cb11c86990eccef2b19e1a20c12b3f0286c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b8f5f240bc040e47669b6dbeadd19ca148ffd0b5ea5e0a5dad3f58b078d3fead",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-05-02T14:20:44Z",
    "title_canon_sha256": "1de50e3fb89fe258ec1dcca268a7795c0bd51c6dd646b31e9b36cfa78314fb15"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1005.0144",
    "kind": "arxiv",
    "version": 3
  }
}