Pith Number

pith:VWOPFQJL

pith:2001:VWOPFQJLJG2BBGOJCOEBA67E5C

not attested not anchored not stored refs pending

Resolving gravitational microlensing events with long-baseline optical interferometry. Prospects for the ESO Very Large Telescope Interferometer

2), (2) Warsaw University Observatory, A. Richichi (1) ((1) ESO, F. Delplancke (1), Garching, Germany, K.M. Gorski (1, Poland)

arxiv:astro-ph/0108178 v1 · 2001-08-10 · 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{VWOPFQJLJG2BBGOJCOEBA67E5C}

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	2026-07-04T16:23:56.952652Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad9cf2c12b49b41099c91388107be4e8a973213217ee0928411a5083497faa5c

Aliases

arxiv: astro-ph/0108178 · arxiv_version: astro-ph/0108178v1 · doi: 10.48550/arxiv.astro-ph/0108178 · pith_short_12: VWOPFQJLJG2B · pith_short_16: VWOPFQJLJG2BBGOJ · pith_short_8: VWOPFQJL

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/VWOPFQJLJG2BBGOJCOEBA67E5C \
  | 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: ad9cf2c12b49b41099c91388107be4e8a973213217ee0928411a5083497faa5c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "827f9d099c44af9c33eb403cbcaaa237dbebc0a644e7a0db68e1687f63577c27",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-08-10T09:12:30Z",
    "title_canon_sha256": "8a7d61a8bc296734091126df399e3a2199251ca3f039302c9d617b456f76ae72"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0108178",
    "kind": "arxiv",
    "version": 1
  }
}