Pith Number

pith:KTRW5ZMS

pith:2013:KTRW5ZMSJ56M5VVF776NWIMY5V

not attested not anchored not stored refs pending

A NLTE analysis of the hot subdwarf O star Bd+28 4211. I. The UV spectrum

G. Fontaine, M. Latour, P. Brassard, P. Chayer

arxiv:1306.3457 v1 · 2013-06-14 · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KTRW5ZMSJ56M5VVF776NWIMY5V}

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	2026-05-18T01:49:16.847021Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

54e36ee5924f7cced6a5fffcdb2198ed7d54768a4569189638f9fc941fd97bc5

Aliases

arxiv: 1306.3457 · arxiv_version: 1306.3457v1 · doi: 10.48550/arxiv.1306.3457 · pith_short_12: KTRW5ZMSJ56M · pith_short_16: KTRW5ZMSJ56M5VVF · pith_short_8: KTRW5ZMS

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/KTRW5ZMSJ56M5VVF776NWIMY5V \
  | 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: 54e36ee5924f7cced6a5fffcdb2198ed7d54768a4569189638f9fc941fd97bc5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "01e4ae39816a63bc9e5cca331a2f70361a34a90794bf366fcd506cebad3a2f94",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-06-14T17:18:15Z",
    "title_canon_sha256": "5aac628f9add802923a2d68b9b03f417d4faad29445079e09a8d020d7638f0c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.3457",
    "kind": "arxiv",
    "version": 1
  }
}