Pith Number

pith:LG5Y7TXX

pith:2009:LG5Y7TXXN5D3INTMF7BXASC3JZ

not attested not anchored not stored refs pending

TeV BL Lac objects at the dawn of the Fermi era

F. Tavecchio, G. Ghirlanda, G. Ghisellini, L. Foschini, L. Maraschi

arxiv:0909.0651 v2 · 2009-09-03 · 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{LG5Y7TXXN5D3INTMF7BXASC3JZ}

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	2026-05-18T02:12:00.307805Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

59bb8fcef76f47b4366c2fc370485b4e4c3bcb183bc76191bbd72495e0c9508b

Aliases

arxiv: 0909.0651 · arxiv_version: 0909.0651v2 · doi: 10.48550/arxiv.0909.0651 · pith_short_12: LG5Y7TXXN5D3 · pith_short_16: LG5Y7TXXN5D3INTM · pith_short_8: LG5Y7TXX

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/LG5Y7TXXN5D3INTMF7BXASC3JZ \
  | 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: 59bb8fcef76f47b4366c2fc370485b4e4c3bcb183bc76191bbd72495e0c9508b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b4aebdd8d5028c66d9414c7739e40b123e9c87b95ecf1e572669a89982e81e1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-09-03T13:38:20Z",
    "title_canon_sha256": "bb3892050ce94384494da8ace3e073d93eea7729ba29564ceb70b1c97eaf8e14"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.0651",
    "kind": "arxiv",
    "version": 2
  }
}