Pith Number

pith:3JF44TPY

pith:1997:3JF44TPYPFIFUGZOBAFPSURZOU

not attested not anchored not stored refs pending

Non-parametric reconstruction of the galaxy-lens in PG1115+080

Cambridge, Liliya L. R. Williams (IoA, Oxford, Prasenjit Saha (Physics, UK)

arxiv:astro-ph/9707346 v1 · 1997-07-31 · 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{3JF44TPYPFIFUGZOBAFPSURZOU}

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	2026-05-18T01:40:16.924329Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

da4bce4df879505a1b2e080af95239750580f4e0d701e3439bef566af44b56c8

Aliases

arxiv: astro-ph/9707346 · arxiv_version: astro-ph/9707346v1 · doi: 10.48550/arxiv.astro-ph/9707346 · pith_short_12: 3JF44TPYPFIF · pith_short_16: 3JF44TPYPFIFUGZO · pith_short_8: 3JF44TPY

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/3JF44TPYPFIFUGZOBAFPSURZOU \
  | 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: da4bce4df879505a1b2e080af95239750580f4e0d701e3439bef566af44b56c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "539b80c2d4a4e298ba02a7ad1a2f33ede429c2e62201d6bfa5936ce741c294d6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-07-31T16:35:32Z",
    "title_canon_sha256": "05372c4888fc80e62d93d7012ae427971e400625f770174e9ba93778d3130c3e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9707346",
    "kind": "arxiv",
    "version": 1
  }
}