Pith Number

pith:UORFXQYI

pith:1998:UORFXQYIHX4VVZYVHAQXFCN4HP

not attested not anchored not stored refs pending

Chromospheric activity of ROSAT discovered weak-lined T Tauri stars

2), (2) Dept. Astrofisica UCM), D. Montes (1, L.W. Ramsey (1) ((1) Pennsylvania State University

arxiv:astro-ph/9809117 v1 · 1998-09-09 · 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{UORFXQYIHX4VVZYVHAQXFCN4HP}

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	2026-05-18T01:07:37.079734Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3a25bc3083df95ae71538217289bc3bc5154168f873c2586870f78141f4cf3e

Aliases

arxiv: astro-ph/9809117 · arxiv_version: astro-ph/9809117v1 · doi: 10.48550/arxiv.astro-ph/9809117 · pith_short_12: UORFXQYIHX4V · pith_short_16: UORFXQYIHX4VVZYV · pith_short_8: UORFXQYI

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/UORFXQYIHX4VVZYVHAQXFCN4HP \
  | 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: a3a25bc3083df95ae71538217289bc3bc5154168f873c2586870f78141f4cf3e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c152559e7d4b4b23cb8a5f66938f7c944afc6479413c3c8d9825b77cc3baa252",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-09-09T20:04:14Z",
    "title_canon_sha256": "ff403480593631460b402a78cea798ca80524a25b7424bc09ff192a926b6de3c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9809117",
    "kind": "arxiv",
    "version": 1
  }
}