Pith Number

pith:2PT2GHZ3

pith:2009:2PT2GHZ33RAOBJN7QYVZ7UOGSX

not attested not anchored not stored refs pending

Short-term Effects of Gamma Ray Bursts on Earth

Brazil), CUBA), Douglas Galante (IAG-USP, J.E. Horvath (IAG-USP, Osmel Mart\'in (UCLV, Rolando C\'ardenas (UCLV

arxiv:0904.1755 v1 · 2009-04-10 · astro-ph.EP · astro-ph.HE

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2PT2GHZ33RAOBJN7QYVZ7UOGSX}

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	2026-05-18T02:14:06.488417Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3e7a31f3bdc40e0a5bf862b9fd1c695cc29f4f718438801a716791f74098180

Aliases

arxiv: 0904.1755 · arxiv_version: 0904.1755v1 · doi: 10.48550/arxiv.0904.1755 · pith_short_12: 2PT2GHZ33RAO · pith_short_16: 2PT2GHZ33RAOBJN7 · pith_short_8: 2PT2GHZ3

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/2PT2GHZ33RAOBJN7QYVZ7UOGSX \
  | 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: d3e7a31f3bdc40e0a5bf862b9fd1c695cc29f4f718438801a716791f74098180

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1be386e93d9f06f6ffda44e2e3924c6aefb89213e9d1ae689fe490d7aabb28b8",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2009-04-10T20:42:21Z",
    "title_canon_sha256": "3231d11d163196d2e24995181f5b6506cb7c63f6525a4428a60b89c4e7ab82a4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.1755",
    "kind": "arxiv",
    "version": 1
  }
}