Pith Number

pith:3ZNDEQNN

pith:2001:3ZNDEQNNXLFD4Z4LTGRBDAY5QO

not attested not anchored not stored refs pending

Associated absorption in radio quasars. I. C IV absorption and the growth of radio sources

E. de Silva, J.C. Baker, M.D. Lehnert, P.D. Barthel, R.D.E. Saunders, R.M. Athreya, R.W. Hunstead

arxiv:astro-ph/0112141 v1 · 2001-12-06 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3ZNDEQNNXLFD4Z4LTGRBDAY5QO}

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	2026-07-04T16:24:43.357451Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de5a3241adbaca3e678b99a211831d8393ac8ceeb0dd6c78ca40c53ace4852cb

Aliases

arxiv: astro-ph/0112141 · arxiv_version: astro-ph/0112141v1 · doi: 10.48550/arxiv.astro-ph/0112141 · pith_short_12: 3ZNDEQNNXLFD · pith_short_16: 3ZNDEQNNXLFD4Z4L · pith_short_8: 3ZNDEQNN

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/3ZNDEQNNXLFD4Z4LTGRBDAY5QO \
  | 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: de5a3241adbaca3e678b99a211831d8393ac8ceeb0dd6c78ca40c53ace4852cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3ec007b1cb307e35d589276ec77f72f24d0eef8ac02195550bbf6b31d8fa3bc7",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-12-06T13:30:14Z",
    "title_canon_sha256": "6df81e89012f085115be763ab8372b98af1956594ebfbc94a615a658a6932360"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0112141",
    "kind": "arxiv",
    "version": 1
  }
}