Pith Number

pith:C3VC4DJS

pith:2021:C3VC4DJS72DI2XYVY457CZEB23

not attested not anchored not stored refs pending

The Incidence of X-ray selected AGN in Nearby Galaxies

J. Aird, Keir L. Birchall, M. G. Watson, R. L. C. Starling

arxiv:2112.03142 v2 · 2021-12-06 · astro-ph.GA · 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{C3VC4DJS72DI2XYVY457CZEB23}

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	2026-07-05T03:40:53.966000Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

16ea2e0d32fe868d5f15c73bf16481d6e6c65650811cd6e8f2b9f4008aa4ec7e

Aliases

arxiv: 2112.03142 · arxiv_version: 2112.03142v2 · doi: 10.48550/arxiv.2112.03142 · pith_short_12: C3VC4DJS72DI · pith_short_16: C3VC4DJS72DI2XYV · pith_short_8: C3VC4DJS

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/C3VC4DJS72DI2XYVY457CZEB23 \
  | 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: 16ea2e0d32fe868d5f15c73bf16481d6e6c65650811cd6e8f2b9f4008aa4ec7e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b1925fed22f43833827c0e23f478328aa7f2b419cdef1bf2af8730a5944468d8",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-12-06T16:22:12Z",
    "title_canon_sha256": "e6b0cc48b869e93396441e2ae518b486c267ae25b84e9110b794c92d2acc23e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.03142",
    "kind": "arxiv",
    "version": 2
  }
}