Pith Number

pith:QWWNKVVC

pith:1998:QWWNKVVCUPJN2PLKXAPMZCGZF7

not attested not anchored not stored refs pending

Fe II emission lines in the UV spectrum of Sirius-A and Vega

A. Vidal-Madjar (IAP), G. Hebrard, H. J. G. L. M. Lamers (Utrecht), M. van Noort, R. Ferlet, R. L. Kurucz (CfA), T. Lanz

arxiv:astro-ph/9803127 v1 · 1998-03-11 · 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{QWWNKVVCUPJN2PLKXAPMZCGZF7}

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	2026-05-18T01:07:37.747734Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

85acd556a2a3d2dd3d6ab81ecc88d92fdb5c729695308f7a6b3e977f1b15ae80

Aliases

arxiv: astro-ph/9803127 · arxiv_version: astro-ph/9803127v1 · doi: 10.48550/arxiv.astro-ph/9803127 · pith_short_12: QWWNKVVCUPJN · pith_short_16: QWWNKVVCUPJN2PLK · pith_short_8: QWWNKVVC

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/QWWNKVVCUPJN2PLKXAPMZCGZF7 \
  | 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: 85acd556a2a3d2dd3d6ab81ecc88d92fdb5c729695308f7a6b3e977f1b15ae80

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a8e3b212e8c0207ad77e361bf50d52fe701d569ce3eeea90374325802c96e17a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-03-11T12:13:49Z",
    "title_canon_sha256": "239548bbb1591eda503b3925bd61038671ad8ea80eeda5a77a9a8356458360f0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9803127",
    "kind": "arxiv",
    "version": 1
  }
}