Pith Number

pith:Q2RL6ZLN

pith:2002:Q2RL6ZLN3IOJBIO33EW3DYVDKE

not attested not anchored not stored refs pending

Measuring starspots on magnetically active stars with the VLTI

B. Posselt, M. Schoeller, M. Wittkowski, O. von der Luehe, S. Hubrig

arxiv:astro-ph/0206090 v1 · 2002-06-06 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Q2RL6ZLN3IOJBIO33EW3DYVDKE}

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	2026-07-04T16:30:09.112953Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

86a2bf656dda1c90a1dbd92db1e2a3510d6fd2aed2e717b1da7e9795c2529003

Aliases

arxiv: astro-ph/0206090 · arxiv_version: astro-ph/0206090v1 · doi: 10.48550/arxiv.astro-ph/0206090 · pith_short_12: Q2RL6ZLN3IOJ · pith_short_16: Q2RL6ZLN3IOJBIO3 · pith_short_8: Q2RL6ZLN

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/Q2RL6ZLN3IOJBIO33EW3DYVDKE \
  | 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: 86a2bf656dda1c90a1dbd92db1e2a3510d6fd2aed2e717b1da7e9795c2529003

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "219ecd8e41b1a6b6823c59bab48ad37d75fc6e88ad274c4a7cadddc46457193f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-06-06T16:50:07Z",
    "title_canon_sha256": "999ec8a89fb957bde96b5c759bc0959b10340db16f17dc20a73030aaac32ffd7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0206090",
    "kind": "arxiv",
    "version": 1
  }
}