Pith Number

pith:I2UF23DK

pith:2009:I2UF23DKCGP6ISI7OFIV2RSHVN

not attested not anchored not stored refs pending

The Nature of Optically Dull Active Galactic Nuclei in COSMOS

Anton M. Koekemoer, Brandon C. Kelly, Chris D. Impey, Francesca Civano, Giorgio Lanzuisi, Jared M. Gabor, Jeyhan S. Kartaltepe, John P. Huchra, Jonathan R. Trump, Knud Jahnke, Mara Salvato, Marcella Brusa, Martin Elvis, Nick Z. Scoville, Patrick J. McCarthy, Peter Capak, Tohru Nagao, Vincenzo Maineri, Yasuhiro Shioya, Yoshi Taniguchi

arxiv:0910.2672 v1 · 2009-10-14 · 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{I2UF23DKCGP6ISI7OFIV2RSHVN}

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	2026-05-18T02:34:18.835100Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

46a85d6c6a119fe4491f71515d4647ab6e176cf9625df7350fbc7482c1bae23c

Aliases

arxiv: 0910.2672 · arxiv_version: 0910.2672v1 · doi: 10.48550/arxiv.0910.2672 · pith_short_12: I2UF23DKCGP6 · pith_short_16: I2UF23DKCGP6ISI7 · pith_short_8: I2UF23DK

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/I2UF23DKCGP6ISI7OFIV2RSHVN \
  | 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: 46a85d6c6a119fe4491f71515d4647ab6e176cf9625df7350fbc7482c1bae23c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4ef21dbe1f1a3856d490ad628fdbf9d79842d92f48176d6250eb6458dcfa9530",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-10-14T19:53:24Z",
    "title_canon_sha256": "481376f05e941aacbc6fa0f3df2c44c1dc46d00514675322bda06e12f3dfd764"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.2672",
    "kind": "arxiv",
    "version": 1
  }
}