Pith Number

pith:FIZWGVCL

pith:2003:FIZWGVCLA53UYDDVMWV6EOKSRZ

not attested not anchored not stored refs pending

Is the Giant Radio Galaxy M87 a TeV Gamma-Ray Emitter?

A. Akhperjanian, et al, HEGRA Collaboration: F. Aharonian, M. Beilicke

arxiv:astro-ph/0302155 v3 · 2003-02-07 · 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{FIZWGVCLA53UYDDVMWV6EOKSRZ}

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.

Cited by

1 paper in Pith

Constraints on axion-like particles from ultra-high-energy observations of M87 with the HAWC observatory

Receipt and verification

First computed	2026-07-04T17:20:29.441121Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a3363544b07774c0c7565abe239528e5986b209ddfcb44ad2c8b0f510caa06a

Aliases

arxiv: astro-ph/0302155 · arxiv_version: astro-ph/0302155v3 · doi: 10.48550/arxiv.astro-ph/0302155 · pith_short_12: FIZWGVCLA53U · pith_short_16: FIZWGVCLA53UYDDV · pith_short_8: FIZWGVCL

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/FIZWGVCLA53UYDDVMWV6EOKSRZ \
  | 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: 2a3363544b07774c0c7565abe239528e5986b209ddfcb44ad2c8b0f510caa06a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ffe25a0b3af0e6ae96699ce1519b0d3eb0382a75f536a41f9da7eefc2a1b8530",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-02-07T17:54:24Z",
    "title_canon_sha256": "f45f52164a6f1f3b17f87ef642ac51eeff2decc0a1dc043d2e729fd25f5ce064"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0302155",
    "kind": "arxiv",
    "version": 3
  }
}