Pith Number

pith:UV64YH3K

pith:2009:UV64YH3KRNGVCZMNVAQBCQSOYZ

not attested not anchored not stored refs pending

Time-scales of Line-broadening Variability in OB Supergiants

A. Herrero, K. Uytterhoeven, N. Castro, S. Sim\'on-D\'iaz

arxiv:0911.0322 v1 · 2009-11-02 · 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{UV64YH3KRNGVCZMNVAQBCQSOYZ}

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	2026-05-18T02:11:00.624865Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a57dcc1f6a8b4d51658da82011424ec65b8269a20bb0edfdb67f76efab108beb

Aliases

arxiv: 0911.0322 · arxiv_version: 0911.0322v1 · doi: 10.48550/arxiv.0911.0322 · pith_short_12: UV64YH3KRNGV · pith_short_16: UV64YH3KRNGVCZMN · pith_short_8: UV64YH3K

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/UV64YH3KRNGVCZMNVAQBCQSOYZ \
  | 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: a57dcc1f6a8b4d51658da82011424ec65b8269a20bb0edfdb67f76efab108beb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "471c4e3e28254f893a2f0bbf43fd5494593fb2902bc92fbae3e632e3f3114b10",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-11-02T14:13:16Z",
    "title_canon_sha256": "6c87edc9006c5a33a470cb591357df4ac10836c617683ca94c1221a7913fb1a9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.0322",
    "kind": "arxiv",
    "version": 1
  }
}