Pith Number

pith:E65LMS6P

pith:2009:E65LMS6POZZX52GPUT5PWQ6V56

not attested not anchored not stored refs pending

Towards a Complete Census of AGNs in Nearby Galaxies: A Large Population of Optically Unidentified AGNs

Andy Goulding, Dave Alexander

arxiv:0906.0772 v3 · 2009-06-03 · 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{E65LMS6POZZX52GPUT5PWQ6V56}

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	2026-05-18T02:13:29.297150Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

27bab64bcf76737ee8cfa4fafb43d5efa5baa6337f5d75e58e8a65d5d4ea62bf

Aliases

arxiv: 0906.0772 · arxiv_version: 0906.0772v3 · doi: 10.48550/arxiv.0906.0772 · pith_short_12: E65LMS6POZZX · pith_short_16: E65LMS6POZZX52GP · pith_short_8: E65LMS6P

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/E65LMS6POZZX52GPUT5PWQ6V56 \
  | 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: 27bab64bcf76737ee8cfa4fafb43d5efa5baa6337f5d75e58e8a65d5d4ea62bf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f7b6f09d1b69c1d565374cf7d0872f8fdb3426e3b99e51cb865f09b44336615",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-06-03T20:23:06Z",
    "title_canon_sha256": "728b55585a678053e4716934bb870b2d86760dcc21e42d5496080627bedfed76"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.0772",
    "kind": "arxiv",
    "version": 3
  }
}