Pith Number

pith:54ZAMWPC

pith:1999:54ZAMWPCVNOILDRCMYG5ETQBBN

not attested not anchored not stored refs pending

RXTE monitoring observations of Markarian 3

D.A. Smith, G.C. Stewart, I. Georgantopoulos, I. Papadakis, R.G. Griffiths, R.S. Warwick

arxiv:astro-ph/9903083 v1 · 1999-03-05 · 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{54ZAMWPCVNOILDRCMYG5ETQBBN}

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	2026-07-04T16:10:46.072544Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef320659e2ab5c858e22660dd24e010b4366674c3b5b94e10f7f3e9b8790727e

Aliases

arxiv: astro-ph/9903083 · arxiv_version: astro-ph/9903083v1 · doi: 10.48550/arxiv.astro-ph/9903083 · pith_short_12: 54ZAMWPCVNOI · pith_short_16: 54ZAMWPCVNOILDRC · pith_short_8: 54ZAMWPC

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/54ZAMWPCVNOILDRCMYG5ETQBBN \
  | 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: ef320659e2ab5c858e22660dd24e010b4366674c3b5b94e10f7f3e9b8790727e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "14ba6828f7fbfaaab71ae3e4ca11e9f08f1d5311d73cddc7fd689c970fef8fa6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-03-05T10:08:02Z",
    "title_canon_sha256": "5cdababf42926fbe27e2f9c653827920f069284f0c4f539cd51e359506a8a51b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9903083",
    "kind": "arxiv",
    "version": 1
  }
}