Pith Number

pith:23P6J3GB

pith:2009:23P6J3GBO5EYPHAW4YERBCK3VB

not attested not anchored not stored refs pending

The long term X-ray spectral variability of AGN

I. E. Papadakis, M. A. Sobolewska

arxiv:0911.0265 v1 · 2009-11-02 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{23P6J3GBO5EYPHAW4YERBCK3VB}

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	2026-05-18T04:37:33.446477Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d6dfe4ecc17749879c16e60910895ba85b055ed61b3fc7fb7a648677bdaf0f52

Aliases

arxiv: 0911.0265 · arxiv_version: 0911.0265v1 · doi: 10.48550/arxiv.0911.0265 · pith_short_12: 23P6J3GBO5EY · pith_short_16: 23P6J3GBO5EYPHAW · pith_short_8: 23P6J3GB

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/23P6J3GBO5EYPHAW4YERBCK3VB \
  | 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: d6dfe4ecc17749879c16e60910895ba85b055ed61b3fc7fb7a648677bdaf0f52

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "35e2f3d2c6f4f7fa5a60a025bb926e2ae3bb99c97c4f4438cfed2eaca8ce0ea7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-11-02T09:23:18Z",
    "title_canon_sha256": "c560a311aa4ccaf211ec52a349dcce747673679e65974663369add02894d65c0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.0265",
    "kind": "arxiv",
    "version": 1
  }
}