Pith Number

pith:3GGST2BR

pith:2009:3GGST2BRIVK5QFVUCH3DPRWEWW

not attested not anchored not stored refs pending

Hardness as a Spectral Peak Estimator for Gamma-Ray Bursts

Amir Shahmoradi, Robert J. Nemiroff

arxiv:0912.2148 v2 · 2009-12-11 · astro-ph.HE · astro-ph.IM · physics.data-an

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3GGST2BRIVK5QFVUCH3DPRWEWW}

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	2026-05-18T00:24:35.736608Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d98d29e8314555d816b411f637c6c4b582209bf838b8660ecaaeb677aeefc1f3

Aliases

arxiv: 0912.2148 · arxiv_version: 0912.2148v2 · doi: 10.48550/arxiv.0912.2148 · pith_short_12: 3GGST2BRIVK5 · pith_short_16: 3GGST2BRIVK5QFVU · pith_short_8: 3GGST2BR

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/3GGST2BRIVK5QFVUCH3DPRWEWW \
  | 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: d98d29e8314555d816b411f637c6c4b582209bf838b8660ecaaeb677aeefc1f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "63057eab3b3ff6e3d538ff4b7f86cda3fa05d91b1a562e49100a871f73d869e0",
    "cross_cats_sorted": [
      "astro-ph.IM",
      "physics.data-an"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-12-11T16:22:29Z",
    "title_canon_sha256": "b9a7f1e10fb0abf381a1aefb4fb18827f56cd5e1372e525e35f0823fa041ac12"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.2148",
    "kind": "arxiv",
    "version": 2
  }
}