Pith Number

pith:6Z4AZUNG

pith:2009:6Z4AZUNG4LIOB2BG67KEI2BL4X

not attested not anchored not stored refs pending

A New Application of the Astrometric Method to Break Severe Degeneracies in Binary Microlensing Events

Andrew Humphrey, Byeong-Gon Park, Sun-Ju Chung, Yoon-Hyun Ryu

arxiv:0901.4411 v2 · 2009-01-28 · 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{6Z4AZUNG4LIOB2BG67KEI2BL4X}

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	2026-05-18T04:29:17.034290Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6780cd1a6e2d0e0e826f7d444682be5eb942937ccf17befe46b8926d3564f7f

Aliases

arxiv: 0901.4411 · arxiv_version: 0901.4411v2 · doi: 10.48550/arxiv.0901.4411 · pith_short_12: 6Z4AZUNG4LIO · pith_short_16: 6Z4AZUNG4LIOB2BG · pith_short_8: 6Z4AZUNG

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/6Z4AZUNG4LIOB2BG67KEI2BL4X \
  | 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: f6780cd1a6e2d0e0e826f7d444682be5eb942937ccf17befe46b8926d3564f7f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "af31dc6519cf5e151d5862ae6785dba58b001b5ebb9479cf76c6731a06f3aa12",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-01-28T08:11:27Z",
    "title_canon_sha256": "667bd159cad9d6f7e5dac35015329f6df8ad8d958b91858d7d2b57adeab0335a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.4411",
    "kind": "arxiv",
    "version": 2
  }
}