Pith Number

pith:FJ7MA2EL

pith:2009:FJ7MA2ELYWVKSQGAN2KYDEE55P

not attested not anchored not stored refs pending

The OPTX Project II: Hard X-ray Luminosity Functions of Active Galactic Nuclei for z<5

A. J. Barger, B. Yencho, L. M. Winter, L. Trouille

arxiv:0903.4183 v1 · 2009-03-24 · 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{FJ7MA2ELYWVKSQGAN2KYDEE55P}

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	2026-05-18T04:29:15.651195Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a7ec0688bc5aaa940c06e9581909debf66e2eef0069dcf9c13631ad0a56cafd

Aliases

arxiv: 0903.4183 · arxiv_version: 0903.4183v1 · doi: 10.48550/arxiv.0903.4183 · pith_short_12: FJ7MA2ELYWVK · pith_short_16: FJ7MA2ELYWVKSQGA · pith_short_8: FJ7MA2EL

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/FJ7MA2ELYWVKSQGAN2KYDEE55P \
  | 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: 2a7ec0688bc5aaa940c06e9581909debf66e2eef0069dcf9c13631ad0a56cafd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "460e0887869a9f747953a6237ce331649fda7e34d5223dd98b2abf9f677413e2",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-03-24T20:09:12Z",
    "title_canon_sha256": "5d3185f95887390bd194d020c0f9c4a5dda7f866091fcc6fd2f3a60a7c760aaa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.4183",
    "kind": "arxiv",
    "version": 1
  }
}