Pith Number

pith:4ZV7MJ3D

pith:2019:4ZV7MJ3D2PL4LQPZZFY26YRSDW

not attested not anchored not stored refs pending

The HiSPARC Experiment

A.P.L.S. de Laat, B. van Eijk, D.B.R.A. Fokkema, J.C. Verkooijen, J.J.M. Steijger, J.W. van Holten, K. van Dam, N.G. Schultheiss

arxiv:1908.01622 v2 · 2019-08-05 · astro-ph.IM · 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{4ZV7MJ3D2PL4LQPZZFY26YRSDW}

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	2026-07-05T00:43:35.605685Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e66bf62763d3d7c5c1f9c971af62321d8d31ad2f153f268bda66d6dc117f9fa7

Aliases

arxiv: 1908.01622 · arxiv_version: 1908.01622v2 · doi: 10.48550/arxiv.1908.01622 · pith_short_12: 4ZV7MJ3D2PL4 · pith_short_16: 4ZV7MJ3D2PL4LQPZ · pith_short_8: 4ZV7MJ3D

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/4ZV7MJ3D2PL4LQPZZFY26YRSDW \
  | 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: e66bf62763d3d7c5c1f9c971af62321d8d31ad2f153f268bda66d6dc117f9fa7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "30f9a8ffddd87354b5d21db8c53292f0af5ec58b54017bd18dffc6f0bc704fed",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-08-05T13:51:22Z",
    "title_canon_sha256": "9dbe28d14ac7a62c8c52aeae9090c7de8beafd22da17e9f8d3caa156d483298d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.01622",
    "kind": "arxiv",
    "version": 2
  }
}