Pith Number

pith:NKSTHEV6

pith:1999:NKSTHEV6M5FKNYTFR2HQJDMHQT

not attested not anchored not stored refs pending

GRB990123, The Optical Flash and The Fireball Model

Columbia University), Re'em Sari (CALTECH), Tsvi Piran (Hebrew University

arxiv:astro-ph/9902009 v1 · 1999-02-02 · 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{NKSTHEV6M5FKNYTFR2HQJDMHQT}

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.

Cited by

2 papers in Pith

Early Optical Follow-up of Gamma-Ray Bursts: The Critical Role of Robotic Telescopes

Systematic Error in Approximate Models of the GRB Early Afterglow

Receipt and verification

First computed	2026-07-04T16:10:40.227472Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6aa53392be674aa6e2658e8f048d8784e8f3858bf7aa4d8f555d85e565a283bf

Aliases

arxiv: astro-ph/9902009 · arxiv_version: astro-ph/9902009v1 · doi: 10.48550/arxiv.astro-ph/9902009 · pith_short_12: NKSTHEV6M5FK · pith_short_16: NKSTHEV6M5FKNYTF · pith_short_8: NKSTHEV6

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/NKSTHEV6M5FKNYTFR2HQJDMHQT \
  | 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: 6aa53392be674aa6e2658e8f048d8784e8f3858bf7aa4d8f555d85e565a283bf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c962e9accddd4b59778be9e2f9e8fe3b3e3cfb51b02fd9af334328ffa1fad892",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-02-02T00:41:43Z",
    "title_canon_sha256": "618c490d99c017e7a5182f01c1a1f9b38568ef3dd56b098951df3babb7adb09d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9902009",
    "kind": "arxiv",
    "version": 1
  }
}