Pith Number

pith:2IGZUGRU

pith:2008:2IGZUGRUWAU7UAZSOYQLXDBGIJ

not attested not anchored not stored refs pending

Very high energy gamma-ray observations of the galaxy clusters Abell 496 and Abell 85 with H.E.S.S

et al, H.E.S.S. Collaboration: F. Aharonian

arxiv:0812.1638 v1 · 2008-12-09 · 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{2IGZUGRUWAU7UAZSOYQLXDBGIJ}

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	2026-05-18T02:15:11.317803Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d20d9a1a34b029fa03327620bb8c26426fdd65ac373f145027c9891077d0a1da

Aliases

arxiv: 0812.1638 · arxiv_version: 0812.1638v1 · doi: 10.48550/arxiv.0812.1638 · pith_short_12: 2IGZUGRUWAU7 · pith_short_16: 2IGZUGRUWAU7UAZS · pith_short_8: 2IGZUGRU

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/2IGZUGRUWAU7UAZSOYQLXDBGIJ \
  | 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: d20d9a1a34b029fa03327620bb8c26426fdd65ac373f145027c9891077d0a1da

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ccb4c4e6b59eeba5a9d38421049c04710f7e4411814553b66bef777c236acde",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-12-09T09:25:46Z",
    "title_canon_sha256": "ebb08860cd95bc949c1f6be4262172cb81a6531ec20691c8f159cd7dfa340cd2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0812.1638",
    "kind": "arxiv",
    "version": 1
  }
}