Pith Number

pith:63TF6XU4

pith:2006:63TF6XU4KNXKOHDRWHRE2QV2TZ

not attested not anchored not stored refs pending

The Optical Gravitational Lensing Experiment. Internet Access to the OGLE Photometry Data Set: OGLE-II BVI maps and I-band data

M.K. Szymanski

arxiv:astro-ph/0602018 v1 · 2006-02-01 · 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{63TF6XU4KNXKOHDRWHRE2QV2TZ}

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	2026-05-18T02:40:25.445052Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6e65f5e9c536ea71c71b1e24d42ba9e6162ba4780fcc662e1c08d419ffe7781

Aliases

arxiv: astro-ph/0602018 · arxiv_version: astro-ph/0602018v1 · doi: 10.48550/arxiv.astro-ph/0602018 · pith_short_12: 63TF6XU4KNXK · pith_short_16: 63TF6XU4KNXKOHDR · pith_short_8: 63TF6XU4

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/63TF6XU4KNXKOHDRWHRE2QV2TZ \
  | 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: f6e65f5e9c536ea71c71b1e24d42ba9e6162ba4780fcc662e1c08d419ffe7781

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "242b142d22a159eb47382cb82d7bdff9f6925761a9625890c2409c9617c415bc",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-02-01T13:35:32Z",
    "title_canon_sha256": "b0a69431ebb769d1c8658c42def1882c0a1c40762e8bfce2c75748926a499a44"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0602018",
    "kind": "arxiv",
    "version": 1
  }
}