Pith Number

pith:RHJTIR3G

pith:2009:RHJTIR3G23LQROV6E2ELU5OEQF

not attested not anchored not stored refs pending

On the presence and absence of disks around O-type stars

B. Davies, Jorick S. Vink (Armagh Observatory), N.R. Walborn, R.D. Oudmaijer, T.J. Harries

arxiv:0909.0888 v1 · 2009-09-04 · 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{RHJTIR3G23LQROV6E2ELU5OEQF}

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	2026-05-18T02:11:59.758655Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

89d3344766d6d708babe2688ba75c48152bc8b51274e0f94277f9e46063a1177

Aliases

arxiv: 0909.0888 · arxiv_version: 0909.0888v1 · doi: 10.48550/arxiv.0909.0888 · pith_short_12: RHJTIR3G23LQ · pith_short_16: RHJTIR3G23LQROV6 · pith_short_8: RHJTIR3G

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/RHJTIR3G23LQROV6E2ELU5OEQF \
  | 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: 89d3344766d6d708babe2688ba75c48152bc8b51274e0f94277f9e46063a1177

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "83eb9cef8b8083c7c5b72c9e057f0d5af5b86c71cea8e33ea625dc3908191d13",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-09-04T10:05:37Z",
    "title_canon_sha256": "c128c26b7080ce17667b841a51bf57d784b06da4f505f7e5341cf164e94dd967"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.0888",
    "kind": "arxiv",
    "version": 1
  }
}