Pith Number

pith:PKHJDSZ6

pith:2010:PKHJDSZ6IPWPFXRMOUJIBIV4FK

not attested not anchored not stored refs pending

The Crab Nebula as a standard candle in very high-energy astrophysics

D. Horns, H.-S. Zechlin, M. Meyer

arxiv:1008.4524 v3 · 2010-08-26 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PKHJDSZ6IPWPFXRMOUJIBIV4FK}

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	2026-05-18T02:41:01.824866Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a8e91cb3e43ecf2de2c751280a2bc2a8eb00f23c8aa8765b18d140a7f16e3c1

Aliases

arxiv: 1008.4524 · arxiv_version: 1008.4524v3 · doi: 10.48550/arxiv.1008.4524 · pith_short_12: PKHJDSZ6IPWP · pith_short_16: PKHJDSZ6IPWPFXRM · pith_short_8: PKHJDSZ6

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/PKHJDSZ6IPWPFXRMOUJIBIV4FK \
  | 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: 7a8e91cb3e43ecf2de2c751280a2bc2a8eb00f23c8aa8765b18d140a7f16e3c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "91876c68e6ab02adfbe007b058ad924168d864d2143fe44e266d4389dc214351",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2010-08-26T14:41:12Z",
    "title_canon_sha256": "d6f15d6b39e8cfa38c52cbbce3f651e2ef2cd7ffa47b002a48c0bdfb549d8856"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1008.4524",
    "kind": "arxiv",
    "version": 3
  }
}