Pith Number

pith:VDHCODGI

pith:2009:VDHCODGISNKUJ53QJRBKLYDBDQ

not attested not anchored not stored refs pending

The HARPS search for southern extra-solar planets XVIII. An Earth-mass planet in the GJ 581 planetary system

C. Lovis, C. Perrier, D. Queloz, F. Bouchy, F. Pepe, H. Beust, J.-L. Bertaux, M. Mayor, N. C. Santos, S. Udry, T. Forveille, X. Bonfils, X. Delfosse

arxiv:0906.2780 v1 · 2009-06-15 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VDHCODGISNKUJ53QJRBKLYDBDQ}

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	2026-05-18T02:13:19.937092Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a8ce270cc8935544f7704c42a5e0611c30c3104a9613f3ef0e33a4cf383c924c

Aliases

arxiv: 0906.2780 · arxiv_version: 0906.2780v1 · doi: 10.48550/arxiv.0906.2780 · pith_short_12: VDHCODGISNKU · pith_short_16: VDHCODGISNKUJ53Q · pith_short_8: VDHCODGI

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/VDHCODGISNKUJ53QJRBKLYDBDQ \
  | 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: a8ce270cc8935544f7704c42a5e0611c30c3104a9613f3ef0e33a4cf383c924c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d835ac13ae16e65240b7bd395afe63db643bfde3b43614488bf1b3340265f495",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2009-06-15T20:10:15Z",
    "title_canon_sha256": "01db836d2f70e0cfeb28dccae348b810bcad148ae6ece5d33cf7bf4a9c2396d4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.2780",
    "kind": "arxiv",
    "version": 1
  }
}