Pith Number

pith:YKA7PQ43

pith:2015:YKA7PQ434CTZWLOYFQ5W2JKOFL

not attested not anchored not stored refs pending

Observations of the Crab Nebula with H.E.S.S. Phase II

C. van Eldik, D. Berge, D. Zaborov (for the H.E.S.S. collaboration), H. Prokoph, J.-P. Lenain, M. de Naurois, M. Holler, R.D. Parsons, T. Murach, V. Marandon

arxiv:1509.02902 v1 · 2015-09-09 · astro-ph.HE · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YKA7PQ434CTZWLOYFQ5W2JKOFL}

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	2026-07-04T23:55:02.483659Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c281f7c39be0a79b2dd82c3b6d254e2ae5b4684a97c0b0b758b233e517d88dd2

Aliases

arxiv: 1509.02902 · arxiv_version: 1509.02902v1 · doi: 10.48550/arxiv.1509.02902 · pith_short_12: YKA7PQ434CTZ · pith_short_16: YKA7PQ434CTZWLOY · pith_short_8: YKA7PQ43

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/YKA7PQ434CTZWLOYFQ5W2JKOFL \
  | 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: c281f7c39be0a79b2dd82c3b6d254e2ae5b4684a97c0b0b758b233e517d88dd2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f64216046c5a783dbeab236cb6445485beae363dbb8c509387d7e02ccf3e4b56",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-09-09T19:37:01Z",
    "title_canon_sha256": "a949c6b86b40d753b4749c8256e02d38ab6cdc72b2d33cb0c8f6d85b1f983e80"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.02902",
    "kind": "arxiv",
    "version": 1
  }
}