Pith Number

pith:ZDPF6VIJ

pith:2009:ZDPF6VIJJF6DIOFYYD43RP2H2D

not attested not anchored not stored refs pending

A Puzzle Involving Galactic Bulge Microlensing Events

Andrew Gould, Ian B. Thompson, Jennifer A. Johnson, Jorge Melendez, Judith G. Cohen, Martin Asplund, Sara Lucatello, Sofia Feltzing, Thomas Bensby, Wenjin Huang

arxiv:0911.5081 v1 · 2009-11-27 · astro-ph.GA · 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{ZDPF6VIJJF6DIOFYYD43RP2H2D}

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	2026-05-18T02:10:36.439978Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c8de5f5509497c3438b8c0f9b8bf47d0f26fdba40650b5ea7aafac6830c7fb1b

Aliases

arxiv: 0911.5081 · arxiv_version: 0911.5081v1 · doi: 10.48550/arxiv.0911.5081 · pith_short_12: ZDPF6VIJJF6D · pith_short_16: ZDPF6VIJJF6DIOFY · pith_short_8: ZDPF6VIJ

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/ZDPF6VIJJF6DIOFYYD43RP2H2D \
  | 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: c8de5f5509497c3438b8c0f9b8bf47d0f26fdba40650b5ea7aafac6830c7fb1b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5535937bde7ca9b5d9050c81a15e9b09d6556cf15dbdaf957e68320b0957fd33",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-11-27T20:55:48Z",
    "title_canon_sha256": "8f3a6b09cb49dbed70867473f8fa139a9ccc7990a923c2b547740a251a95c1ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.5081",
    "kind": "arxiv",
    "version": 1
  }
}