Pith Number

pith:VAHQQZQE

pith:2009:VAHQQZQES5GMIPHONM2PKB64PG

not attested not anchored not stored refs pending

X-ray Constraints on the AGN Properties in Spitzer-IRS identified z~2 Ultraluminous Infrared Galaxies

2, 3), A. Sajina (5), Caltech; (5) Haverford College; (6) Durham University), D. M. Alexander (6) ((1) Space Science Institute; (2) Pontificia Universidad Catolica de Chile; (3) Columbia University; (4) WISE, F.E. Bauer (1, Lin Yan (4)

arxiv:0912.4267 v1 · 2009-12-21 · astro-ph.CO · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VAHQQZQES5GMIPHONM2PKB64PG}

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	2026-05-18T02:33:55.727149Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a80f086604974cc43cee6b34f507dc799e5f2a0cd8f35a9d5435443c5d5f4272

Aliases

arxiv: 0912.4267 · arxiv_version: 0912.4267v1 · doi: 10.48550/arxiv.0912.4267 · pith_short_12: VAHQQZQES5GM · pith_short_16: VAHQQZQES5GMIPHO · pith_short_8: VAHQQZQE

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/VAHQQZQES5GMIPHONM2PKB64PG \
  | 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: a80f086604974cc43cee6b34f507dc799e5f2a0cd8f35a9d5435443c5d5f4272

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cfe72d65de53fb1a921fa96c6ce8a632ba08fc44a1d210400371a652fd928461",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-12-21T22:07:37Z",
    "title_canon_sha256": "b3faba51216e6324f4f0e3190cefc667f3060159ff5940b983b4550791cd76e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.4267",
    "kind": "arxiv",
    "version": 1
  }
}