Pith Number

pith:X2K5HFBR

pith:1997:X2K5HFBRB52I5BR5JIB6AHYYUV

not attested not anchored not stored refs pending

Shocked by GRB 970228: the afterglow of a cosmological fireball

Astrophysics, Cambridge), Martin J. Rees (Institute of Astronomy, Pennsylvania State University), Peter Meszaros (Department of Astronomy, Ralph A.M.J. Wijers

arxiv:astro-ph/9704153 v2 · 1997-04-15 · 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{X2K5HFBRB52I5BR5JIB6AHYYUV}

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	2026-05-18T01:22:58.769466Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be95d394310f748e863d4a03e01f18a5420d18258aa8e0fc31dc9e05d29e9f05

Aliases

arxiv: astro-ph/9704153 · arxiv_version: astro-ph/9704153v2 · doi: 10.48550/arxiv.astro-ph/9704153 · pith_short_12: X2K5HFBRB52I · pith_short_16: X2K5HFBRB52I5BR5 · pith_short_8: X2K5HFBR

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/X2K5HFBRB52I5BR5JIB6AHYYUV \
  | 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: be95d394310f748e863d4a03e01f18a5420d18258aa8e0fc31dc9e05d29e9f05

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eba89f0d1225982e30f01aca12361bd7db73bdc1c9df5ec50834d940b64e8659",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-04-15T20:37:16Z",
    "title_canon_sha256": "a023fdf5d0cc0effc8bac8f6eb4fec2d1c902c1b6b594bc4ca9b8690745138e2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9704153",
    "kind": "arxiv",
    "version": 2
  }
}