Pith Number

pith:IAWQ7H3W

pith:2004:IAWQ7H3WZP3X5QBGMHHVMMWJDI

not attested not anchored not stored refs pending

A Probable z~7 Galaxy Strongly Lensed by the Rich Cluster Abell 2218: Exploring the Dark Ages

Jean-Paul Kneib (OMP/Caltech), Johan Richard (OMP), Michael R. Santos (Caltech/IoA), Richard S. Ellis (Caltech)

arxiv:astro-ph/0402319 v1 · 2004-02-12 · 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{IAWQ7H3WZP3X5QBGMHHVMMWJDI}

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	2026-05-18T04:23:00.791788Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

402d0f9f76cbf77ec02661cf5632c91a1d7969cffbe562b31c9dc986be6501bf

Aliases

arxiv: astro-ph/0402319 · arxiv_version: astro-ph/0402319v1 · doi: 10.48550/arxiv.astro-ph/0402319 · pith_short_12: IAWQ7H3WZP3X · pith_short_16: IAWQ7H3WZP3X5QBG · pith_short_8: IAWQ7H3W

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/IAWQ7H3WZP3X5QBGMHHVMMWJDI \
  | 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: 402d0f9f76cbf77ec02661cf5632c91a1d7969cffbe562b31c9dc986be6501bf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f978027637f8a126ab74086d89876236a89fce588324ff3b6573535778f52ee5",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-02-12T21:22:16Z",
    "title_canon_sha256": "d88c29ff52404d2396b5c9a1c112bd6d464f049b52c011010ae7a2e6ceaa25af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0402319",
    "kind": "arxiv",
    "version": 1
  }
}