Pith Number

pith:5DSQGIDK

pith:2009:5DSQGIDKG4UPGN5RMVX4QCNHFC

not attested not anchored not stored refs pending

The Incidence of Active Galactic Nuclei in Pure Disk Galaxies: The Spitzer View

M. Gliozzi, N. P. Abel, S. Satyapal, T. Boeker, T. Heckman, W. Mcalpine

arxiv:0908.1820 v1 · 2009-08-13 · 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{5DSQGIDKG4UPGN5RMVX4QCNHFC}

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	2026-05-18T02:12:34.740325Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e8e503206a3728f337b1656fc809a72887fa4dbbebce6873c26cfadd6ca8aa39

Aliases

arxiv: 0908.1820 · arxiv_version: 0908.1820v1 · doi: 10.48550/arxiv.0908.1820 · pith_short_12: 5DSQGIDKG4UP · pith_short_16: 5DSQGIDKG4UPGN5R · pith_short_8: 5DSQGIDK

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/5DSQGIDKG4UPGN5RMVX4QCNHFC \
  | 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: e8e503206a3728f337b1656fc809a72887fa4dbbebce6873c26cfadd6ca8aa39

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6f564f7c1578070b40fe011db84b3c25d8ae0681e8c3b81d88ca12b13f42f61c",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-08-13T02:04:05Z",
    "title_canon_sha256": "41dab83fe8bf53560dc2b9d23383d7236dcd937b64415396c75652889f47caf7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.1820",
    "kind": "arxiv",
    "version": 1
  }
}