Pith Number

pith:LKT7GY3W

pith:1995:LKT7GY3WNBLTQUASUH3C4H6TGI

not attested not anchored not stored refs pending

IMAGING OF LOW REDSHIFT QSOs WITH WFPC2

J.B. Hutchings, S.C. Morris

arxiv:astro-ph/9502045 v1 · 1995-02-07 · 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{LKT7GY3WNBLTQUASUH3C4H6TGI}

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	2026-05-18T01:07:42.326087Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5aa7f363766857385012a1f62e1fd3322d23c1e8a8b334133a4a9a6bbc02dfa2

Aliases

arxiv: astro-ph/9502045 · arxiv_version: astro-ph/9502045v1 · doi: 10.48550/arxiv.astro-ph/9502045 · pith_short_12: LKT7GY3WNBLT · pith_short_16: LKT7GY3WNBLTQUAS · pith_short_8: LKT7GY3W

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/LKT7GY3WNBLTQUASUH3C4H6TGI \
  | 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: 5aa7f363766857385012a1f62e1fd3322d23c1e8a8b334133a4a9a6bbc02dfa2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f19918018bbcb17358d2150ec159a7698efa5a4040833409426a34ad5ed6239c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1995-02-07T19:28:04Z",
    "title_canon_sha256": "4f455f2426ea4d3a43409b30356130b47625f73ee697994488a14be3616946c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9502045",
    "kind": "arxiv",
    "version": 1
  }
}