Pith Number

pith:ZKNRQLS3

pith:1998:ZKNRQLS3N44TDXBWZJP26LCJMG

not attested not anchored not stored refs pending

Markarian 501 in X-ray bright state - RXTE observations

G. Lamer, S.J. Wagner

arxiv:astro-ph/9801007 v1 · 1998-01-02 · 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{ZKNRQLS3N44TDXBWZJP26LCJMG}

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	2026-05-18T01:07:37.889950Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca9b182e5b6f3931dc36ca5faf2c4961afa7f17ed0dc0873e837021e6ff216f5

Aliases

arxiv: astro-ph/9801007 · arxiv_version: astro-ph/9801007v1 · doi: 10.48550/arxiv.astro-ph/9801007 · pith_short_12: ZKNRQLS3N44T · pith_short_16: ZKNRQLS3N44TDXBW · pith_short_8: ZKNRQLS3

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/ZKNRQLS3N44TDXBWZJP26LCJMG \
  | 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: ca9b182e5b6f3931dc36ca5faf2c4961afa7f17ed0dc0873e837021e6ff216f5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "08ad326f79f6240900e27ee12409ba1cb2530d70408284d146c4f367adf0ddd0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-01-02T19:13:29Z",
    "title_canon_sha256": "2beff80092f29e9a95be9a64f40b14c4098ff9b9523533c8f7548c4d63c37084"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9801007",
    "kind": "arxiv",
    "version": 1
  }
}