Pith Number

pith:Q4LKSJLA

pith:1999:Q4LKSJLAE4D3PXXLGRHPVKNRY7

not attested not anchored not stored refs pending

The Host Galaxy of GRB 990123

C. Akerlof, C. Koresko, D. A. Frail, D. Kelson, E. Costa, F. Chaffee, F. Frontera, G. Illingworth, G. Neugebauer, G. Squires, J. S. Bloom, L. Armus, L. Piro, M. Feroci, R. Goodrich, R. R. Gal, R. Sari, S. C. Odewahn, S. G. Djorgovski, S. Mao, S. R. Kulkarni F. A. Harrison, T. A. McKay

arxiv:astro-ph/9902182 v2 · 1999-02-12 · 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{Q4LKSJLAE4D3PXXLGRHPVKNRY7}

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	2026-07-04T16:10:42.466114Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8716a925602707b7deeb344efaa9b1c7d9891ce7617d20c4ed6d250ae4d9ac93

Aliases

arxiv: astro-ph/9902182 · arxiv_version: astro-ph/9902182v2 · doi: 10.48550/arxiv.astro-ph/9902182 · pith_short_12: Q4LKSJLAE4D3 · pith_short_16: Q4LKSJLAE4D3PXXL · pith_short_8: Q4LKSJLA

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/Q4LKSJLAE4D3PXXLGRHPVKNRY7 \
  | 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: 8716a925602707b7deeb344efaa9b1c7d9891ce7617d20c4ed6d250ae4d9ac93

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "58a672ee6466273211346b4891bc53f5d54c739e859af8691a264b633ed0c89c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-02-12T00:58:03Z",
    "title_canon_sha256": "403e039b9b502e6fef57c49dd9f90d7b4c5bbe92ce92889c4f186217e5feafa7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9902182",
    "kind": "arxiv",
    "version": 2
  }
}