Pith Number

pith:XQF7SFBD

pith:2019:XQF7SFBDRV26YKDDSQX7UKIMQZ

not attested not anchored not stored refs pending

Coordinated UV and X-ray spectroscopic observations of the O-type giant xi Per: the connection between X-rays and large-scale wind structure

Derck Massa, Lida Oskinova, Raman Prinja, Richard Ignace

arxiv:1901.09959 v1 · 2019-01-28 · 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{XQF7SFBDRV26YKDDSQX7UKIMQZ}

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	2026-05-17T23:51:30.147436Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc0bf914238d75ec2863942ffa290c864ca6eb16cefdbd86d52e9b4700574bee

Aliases

arxiv: 1901.09959 · arxiv_version: 1901.09959v1 · doi: 10.48550/arxiv.1901.09959 · pith_short_12: XQF7SFBDRV26 · pith_short_16: XQF7SFBDRV26YKDD · pith_short_8: XQF7SFBD

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/XQF7SFBDRV26YKDDSQX7UKIMQZ \
  | 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: bc0bf914238d75ec2863942ffa290c864ca6eb16cefdbd86d52e9b4700574bee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6bac6ed995ad6d747ddc47f6a2b8f076876a38f5a32aa51997ffa3cdd88b0172",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-01-28T19:36:50Z",
    "title_canon_sha256": "20a7137bb7fdc637ede58e9526564bcccd3089a1c8f979f17a63b15d4b830c13"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.09959",
    "kind": "arxiv",
    "version": 1
  }
}