Pith Number

pith:HDRZKRQM

pith:2009:HDRZKRQMVRE7WFE5VRKFB7OI6J

not attested not anchored not stored refs pending

Long-term stability of spotted regions and the activity-induced Rossiter-McLaughlin effect on V889 Herculis. A synergy of photometry, radial velocity measurements, and Doppler imaging

I. Ilyin, J. H. M. M. Schmitt, J. N. Gonz\'alez-P\'erez, K. F. Huber, M. Esposito, S. Czesla, U. Wolter

arxiv:0904.1572 v1 · 2009-04-09 · 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{HDRZKRQMVRE7WFE5VRKFB7OI6J}

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	2026-05-18T02:14:06.672700Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

38e395460cac49fb149dac5450fdc8f26a095e1f2b367bf254373d73dd8eb1a2

Aliases

arxiv: 0904.1572 · arxiv_version: 0904.1572v1 · doi: 10.48550/arxiv.0904.1572 · pith_short_12: HDRZKRQMVRE7 · pith_short_16: HDRZKRQMVRE7WFE5 · pith_short_8: HDRZKRQM

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/HDRZKRQMVRE7WFE5VRKFB7OI6J \
  | 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: 38e395460cac49fb149dac5450fdc8f26a095e1f2b367bf254373d73dd8eb1a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d6fceec4125b30617201b6a753df49856d9eb68066afe3c91a0e7441b24791c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-04-09T17:27:57Z",
    "title_canon_sha256": "7bbe961260eca1544d3f5a12f83a63fcd7cc7ebd6f17e7c75f79f9bd9cfe0186"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.1572",
    "kind": "arxiv",
    "version": 1
  }
}