Pith Number

pith:MU2MC5TZ

pith:2003:MU2MC5TZMWYJUVVQMLOWW3YNWG

not attested not anchored not stored refs pending

Evidence of TeV gamma-ray emission from the nearby starburst galaxy NGC 253

CANGAROO-II collaboration, C. Itoh, K. Okumura, R. Enomoto, S. Yanagita, T. Tanimori, T. Yoshida

arxiv:astro-ph/0304295 v1 · 2003-04-16 · 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{MU2MC5TZMWYJUVVQMLOWW3YNWG}

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	2026-07-04T16:36:52.208118Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6534c1767965b09a56b062dd6b6f0db1895da96d3deaf6a7706edfabce5185f1

Aliases

arxiv: astro-ph/0304295 · arxiv_version: astro-ph/0304295v1 · doi: 10.48550/arxiv.astro-ph/0304295 · pith_short_12: MU2MC5TZMWYJ · pith_short_16: MU2MC5TZMWYJUVVQ · pith_short_8: MU2MC5TZ

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/MU2MC5TZMWYJUVVQMLOWW3YNWG \
  | 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: 6534c1767965b09a56b062dd6b6f0db1895da96d3deaf6a7706edfabce5185f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d994addef5a6ddc37e7776d5b0e6d763fed46acc41dbee43da300afccc8649c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-04-16T04:58:50Z",
    "title_canon_sha256": "96fee4b62b7ef7c45f31e9c7dc0ac989e94dd8fb110c5679b1d256513be2d297"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0304295",
    "kind": "arxiv",
    "version": 1
  }
}