Pith Number

pith:KF7AQ3BJ

pith:2019:KF7AQ3BJ5QFOYAQU5GYWEHQFFR

not attested not anchored not stored refs pending

Imaging pulsar echoes at low frequencies

Bonn), Olaf Wucknitz (MPIfR

arxiv:1904.11347 v1 · 2019-04-25 · astro-ph.GA · 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{KF7AQ3BJ5QFOYAQU5GYWEHQFFR}

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	2026-05-17T23:47:45.159709Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

517e086c29ec0aec0214e9b1621e052c63e60cb90f04fc0035304aadf9d94764

Aliases

arxiv: 1904.11347 · arxiv_version: 1904.11347v1 · doi: 10.48550/arxiv.1904.11347 · pith_short_12: KF7AQ3BJ5QFO · pith_short_16: KF7AQ3BJ5QFOYAQU · pith_short_8: KF7AQ3BJ

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/KF7AQ3BJ5QFOYAQU5GYWEHQFFR \
  | 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: 517e086c29ec0aec0214e9b1621e052c63e60cb90f04fc0035304aadf9d94764

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa6a4f5aa23178a869a2ddcdf59e843bd3145ef104541db88dc07d173330ea06",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-04-25T14:00:04Z",
    "title_canon_sha256": "4211e833d17930c24905cb589e7ca0c38ea1b3fb75af21b25fd0fd1e9cb8c67e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.11347",
    "kind": "arxiv",
    "version": 1
  }
}