Pith Number

pith:H4B4S2FY

pith:2009:H4B4S2FYXWTTF4X2ME5DXSFLOB

not attested not anchored not stored refs pending

A search for VHE counterparts of Galactic Fermi bright sources and MeV to TeV spectral characterization

Omar Tibolla, P.H. Thomas Tam, Ryan Chaves, Stefan Wagner

arxiv:0911.4333 v2 · 2009-11-23 · astro-ph.HE · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H4B4S2FYXWTTF4X2ME5DXSFLOB}

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	2026-05-18T02:24:46.147498Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f03c968b8bda732f2fa613a3bc8ab7072135d7b41a09441d630af8062aee508

Aliases

arxiv: 0911.4333 · arxiv_version: 0911.4333v2 · doi: 10.48550/arxiv.0911.4333 · pith_short_12: H4B4S2FYXWTT · pith_short_16: H4B4S2FYXWTTF4X2 · pith_short_8: H4B4S2FY

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/H4B4S2FYXWTTF4X2ME5DXSFLOB \
  | 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: 3f03c968b8bda732f2fa613a3bc8ab7072135d7b41a09441d630af8062aee508

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f581055382572529c658bcf45d0dfc1a44df9950814d5f36e1b09614c3772ac5",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-11-23T08:15:25Z",
    "title_canon_sha256": "a18759f58b209756a64262fd199fc2ec61151b58c02d6ebb8417bf09212f4f78"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.4333",
    "kind": "arxiv",
    "version": 2
  }
}