Pith Number

pith:44MWRQA3

pith:1994:44MWRQA33IBDMXSA42CE6UTQQQ

not attested not anchored not stored refs pending

Gravitational Lensing of Distant Field Galaxies by Rich Clusters: II. -- Cluster Mass Distributions

Ian Smail, Michael J. Fitchett & Alastair C. Edge, Richard S. Ellis

arxiv:astro-ph/9402049 v1 · 1994-02-21 · 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{44MWRQA33IBDMXSA42CE6UTQQQ}

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	2026-05-18T01:40:26.291804Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e71968c01bda02365e40e6844f5270842245f6c677059ccdce16ec4bddc9c84e

Aliases

arxiv: astro-ph/9402049 · arxiv_version: astro-ph/9402049v1 · doi: 10.48550/arxiv.astro-ph/9402049 · pith_short_12: 44MWRQA33IBD · pith_short_16: 44MWRQA33IBDMXSA · pith_short_8: 44MWRQA3

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/44MWRQA33IBDMXSA42CE6UTQQQ \
  | 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: e71968c01bda02365e40e6844f5270842245f6c677059ccdce16ec4bddc9c84e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c22f290e9d87b9f9535b5751900d05b6a8a07dac3529a76090a04db1d0838b79",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1994-02-21T04:17:20Z",
    "title_canon_sha256": "4d071e1a7b933eef8398a682053c2899c38b81bf8edd5e49700b8e8b2086b276"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9402049",
    "kind": "arxiv",
    "version": 1
  }
}