Pith Number

pith:Z2ZA3TDY

pith:2009:Z2ZA3TDYTXKZHXFKBZ247ECK6Y

not attested not anchored not stored refs pending

Detection of Extrasolar Planets by Gravitational Microlensing

David P. Bennett

arxiv:0902.1761 v1 · 2009-02-10 · astro-ph.EP · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Z2ZA3TDYTXKZHXFKBZ247ECK6Y}

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	2026-05-18T02:14:48.435652Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ceb20dcc789dd593dcaa0e75cf904af61a3b8a69436b4685158c62d531efbddc

Aliases

arxiv: 0902.1761 · arxiv_version: 0902.1761v1 · doi: 10.48550/arxiv.0902.1761 · pith_short_12: Z2ZA3TDYTXKZ · pith_short_16: Z2ZA3TDYTXKZHXFK · pith_short_8: Z2ZA3TDY

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/Z2ZA3TDYTXKZHXFKBZ247ECK6Y \
  | 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: ceb20dcc789dd593dcaa0e75cf904af61a3b8a69436b4685158c62d531efbddc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "06fbc3e427db9bd205d627bd433b619d347d1d6071ebda46aa3b71cfe9e289e1",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2009-02-10T21:39:17Z",
    "title_canon_sha256": "cb5b879b36eec6fa96a7ba025246ef0acad7574731dde6fe073c6be74390027b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.1761",
    "kind": "arxiv",
    "version": 1
  }
}