Pith Number

pith:S4J7WVFE

pith:2002:S4J7WVFEW4QKDRYMHFN7B736M6

not attested not anchored not stored refs pending

The Microlensing Event MACHO-99-BLG-22/OGLE-1999-BUL-32: An Intermediate Mass Black Hole, or a Lens in the Bulge

A.C. Becker, B.R. Johnson, C. Laws, D.P. Bennett, J.J. Calitz, J.L. Quinn, S.H. Rhie, W. Sutherland

arxiv:astro-ph/0207006 v1 · 2002-06-29 · 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{S4J7WVFEW4QKDRYMHFN7B736M6}

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	2026-07-04T14:12:04.458642Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9713fb54a4b720a1c70c395bf0ff7e6780910ebd4399ee05b8b4b4d229673a4a

Aliases

arxiv: astro-ph/0207006 · arxiv_version: astro-ph/0207006v1 · doi: 10.48550/arxiv.astro-ph/0207006 · pith_short_12: S4J7WVFEW4QK · pith_short_16: S4J7WVFEW4QKDRYM · pith_short_8: S4J7WVFE

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/S4J7WVFEW4QKDRYMHFN7B736M6 \
  | 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: 9713fb54a4b720a1c70c395bf0ff7e6780910ebd4399ee05b8b4b4d229673a4a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50c037dc327b1d48a90c8076277e8741b490ed8c7abac14c254caf80c0f27247",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-06-29T14:39:58Z",
    "title_canon_sha256": "c4007afaf3491f55adafa843d8380ed6b31e746505296bdad9770f75f53bc84e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0207006",
    "kind": "arxiv",
    "version": 1
  }
}