Pith Number

pith:S5J7FNUL

pith:2000:S5J7FNULGJD2WCKATWT6OHI4BG

not attested not anchored not stored refs pending

Infrared observations of gravitational lensing in Abell 2219 with CIRSI

Alexandre Refregier, Craig D. Mackay, Jocelyn Bezecourt, Martin G. Beckett, Meghan E. Gray, Michael D. Hoenig, Richard G. McMahon, Richard S. Ellis

arxiv:astro-ph/0004161 v2 · 2000-04-12 · 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{S5J7FNULGJD2WCKATWT6OHI4BG}

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	2026-05-18T01:40:48.033218Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9753f2b68b3247ab09409da7e71d1c09b2e2f3bee3ad4ae76e6ae1ad19ffd842

Aliases

arxiv: astro-ph/0004161 · arxiv_version: astro-ph/0004161v2 · doi: 10.48550/arxiv.astro-ph/0004161 · pith_short_12: S5J7FNULGJD2 · pith_short_16: S5J7FNULGJD2WCKA · pith_short_8: S5J7FNUL

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/S5J7FNULGJD2WCKATWT6OHI4BG \
  | 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: 9753f2b68b3247ab09409da7e71d1c09b2e2f3bee3ad4ae76e6ae1ad19ffd842

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d948f6dbab5bf9f49bdf7ace43d4ab8538cbc188dadf39a191b6c19231e8524",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-04-12T17:04:12Z",
    "title_canon_sha256": "acfd3ab950d3b72e37271b8f0540cbf8efc7d04e4af549122cb2898b97b17e38"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0004161",
    "kind": "arxiv",
    "version": 2
  }
}