Pith Number

pith:X7R7JF3D

pith:2009:X7R7JF3DTFJP7N6LCND2PDQNQX

not attested not anchored not stored refs pending

The onset of the GeV afterglow of GRB 090510

2) ((1) INAF-Osservatorio Astronomico di Brera, (2) Universita' dell'Insubria), G. Ghirlanda (1), G. Ghisellini (1), L. Nava (1

arxiv:0909.0016 v1 · 2009-08-31 · 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{X7R7JF3DTFJP7N6LCND2PDQNQX}

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	2026-05-18T02:12:12.488040Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bfe3f497639952ffb7cb1347a78e0d85fca64f1a8f858ec5cf674b0cae7fb218

Aliases

arxiv: 0909.0016 · arxiv_version: 0909.0016v1 · doi: 10.48550/arxiv.0909.0016 · pith_short_12: X7R7JF3DTFJP · pith_short_16: X7R7JF3DTFJP7N6L · pith_short_8: X7R7JF3D

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/X7R7JF3DTFJP7N6LCND2PDQNQX \
  | 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: bfe3f497639952ffb7cb1347a78e0d85fca64f1a8f858ec5cf674b0cae7fb218

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0828b5fa2f521ff5312fc7d49bf44449f3564a02fcb4dc0c0071511c48b9609f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-08-31T20:04:14Z",
    "title_canon_sha256": "d2ae51b0aa7772ad87034e50147e544e1a3dcac4743f5705158821d19db93a98"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.0016",
    "kind": "arxiv",
    "version": 1
  }
}