Pith Number

pith:E7WJZYZA

pith:2008:E7WJZYZAE3GLXVUXKKBLTXDNJ2

not attested not anchored not stored refs pending

The June 2008 flare of Markarian 421 from optical to TeV energies

et al, Gasp-Webt Collaboration, MAGIC collaboration, The Agile Collaboration, Veritas Collaboration: I. Donnarumma

arxiv:0812.1500 v1 · 2008-12-08 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{E7WJZYZAE3GLXVUXKKBLTXDNJ2}

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	2026-05-18T03:48:03.050581Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

27ec9ce32026ccbbd6975282b9dc6d4e9fa82e4f7da5a9f5bdc9d33000d11091

Aliases

arxiv: 0812.1500 · arxiv_version: 0812.1500v1 · doi: 10.48550/arxiv.0812.1500 · pith_short_12: E7WJZYZAE3GL · pith_short_16: E7WJZYZAE3GLXVUX · pith_short_8: E7WJZYZA

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/E7WJZYZAE3GLXVUXKKBLTXDNJ2 \
  | 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: 27ec9ce32026ccbbd6975282b9dc6d4e9fa82e4f7da5a9f5bdc9d33000d11091

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2458616e01ae82629b8936596f4adb502699e342721da331f7a666dba75db209",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-12-08T20:37:52Z",
    "title_canon_sha256": "8c78601d6a31dc1445279f858669449f6ae5434949ad9bad6f0792871a6b2342"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0812.1500",
    "kind": "arxiv",
    "version": 1
  }
}