Pith Number

pith:DGXUDQP5

pith:2009:DGXUDQP5LXPWT5GJSUN665A33E

not attested not anchored not stored refs pending

VLTI/AMBER unveils a possible dusty pinwheel nebula in WR118

Dieter Schertl (MPIFR), Florentin Millour (MPIFR), Gerd Weigelt (MPIFR), Jos\'e Groh (MPIFR), Karl-Heinz Hofmann (MPIFR), Keiichi Ohnaka (MPIFR), Koji Murakawa (MPIFR), Olivier Chesneau (FIZEAU), Thomas Driebe (MPIFR)

arxiv:0909.4207 v1 · 2009-09-23 · 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{DGXUDQP5LXPWT5GJSUN665A33E}

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	2026-05-18T02:11:44.867110Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

19af41c1fd5ddf69f4c9951bef741bd91c488cb7ac6f577cf78ffb468c3c4dd4

Aliases

arxiv: 0909.4207 · arxiv_version: 0909.4207v1 · doi: 10.48550/arxiv.0909.4207 · pith_short_12: DGXUDQP5LXPW · pith_short_16: DGXUDQP5LXPWT5GJ · pith_short_8: DGXUDQP5

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/DGXUDQP5LXPWT5GJSUN665A33E \
  | 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: 19af41c1fd5ddf69f4c9951bef741bd91c488cb7ac6f577cf78ffb468c3c4dd4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b36e02121a67274b090035ba308307bf40fa0da5a770fbc910115c10197b7625",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-09-23T13:23:19Z",
    "title_canon_sha256": "2e507473e43aee9a1ce1816e33f09968adc8544d338cf7cc53fdee2d12893291"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.4207",
    "kind": "arxiv",
    "version": 1
  }
}