Pith Number

pith:HOLXZT74

pith:2004:HOLXZT74MFFZPCRQS56G5ESW4T

not attested not anchored not stored refs pending

Observations of 54 Active Galactic Nuclei with the HEGRA System of Cherenkov Telescopes

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

arxiv:astro-ph/0401301 v1 · 2004-01-15 · 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{HOLXZT74MFFZPCRQS56G5ESW4T}

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	2026-05-18T00:24:45.764038Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3b977ccffc614b978a30977c6e9256e4de7a01ded8562e394b473281e17849a4

Aliases

arxiv: astro-ph/0401301 · arxiv_version: astro-ph/0401301v1 · doi: 10.48550/arxiv.astro-ph/0401301 · pith_short_12: HOLXZT74MFFZ · pith_short_16: HOLXZT74MFFZPCRQ · pith_short_8: HOLXZT74

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/HOLXZT74MFFZPCRQS56G5ESW4T \
  | 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: 3b977ccffc614b978a30977c6e9256e4de7a01ded8562e394b473281e17849a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b3c3abf4f3c6e0fa07dd5564f79b7d880f739bf9ed0c76bc5e19e244820ce89d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-01-15T14:21:19Z",
    "title_canon_sha256": "5fd3367c9e40bc204a94392828a880c15a3188b897400d58ef7d5ee10f2ad31a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0401301",
    "kind": "arxiv",
    "version": 1
  }
}