Pith Number

pith:G6K7QKMO

pith:2005:G6K7QKMOCY57QM7VVHCKTHWOAK

not attested not anchored not stored refs pending

Microlensing optical depth toward the Galactic Bulge using bright sources from OGLE-II

A. Udalski, G. Pietrzynski, I. Soszy nski, K. Zebrun, L. Wyrzykowski & B. Paczynski, M. Kubiak, M. Szymanski, O.Szewczyk, P. R. Wozniak, T. Sumi

arxiv:astro-ph/0502363 v4 · 2005-02-17 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{G6K7QKMOCY57QM7VVHCKTHWOAK}

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	2026-05-18T04:36:30.223397Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3795f8298e163bf833f5a9c4a99ece02b9dee1b1ae0afdc99ed032dfe218be9a

Aliases

arxiv: astro-ph/0502363 · arxiv_version: astro-ph/0502363v4 · doi: 10.48550/arxiv.astro-ph/0502363 · pith_short_12: G6K7QKMOCY57 · pith_short_16: G6K7QKMOCY57QM7V · pith_short_8: G6K7QKMO

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/G6K7QKMOCY57QM7VVHCKTHWOAK \
  | 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: 3795f8298e163bf833f5a9c4a99ece02b9dee1b1ae0afdc99ed032dfe218be9a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "95a22c89a36d4929949142c94e2b7085e4d1dbde73b7c6159e601abe72304f3a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-02-17T21:32:06Z",
    "title_canon_sha256": "f69188cd33cedabdd582f42cf1baa01faa22a7a77ab270ab3b24d1adf6520d91"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0502363",
    "kind": "arxiv",
    "version": 4
  }
}