Pith Number

pith:JBEZUZY3

pith:2017:JBEZUZY3YXHVVPYFJYL6S7ARWN

not attested not anchored not stored refs pending

Pulsar Positioning System: A quest for evidence of extraterrestrial engineering

Clement Vidal

arxiv:1704.03316 v2 · 2017-04-05 · physics.pop-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{JBEZUZY3YXHVVPYFJYL6S7ARWN}

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	2026-05-18T00:29:39.210629Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

48499a671bc5cf5abf054e17e97c11b3412965e1c9070e1527990ce3c988486e

Aliases

arxiv: 1704.03316 · arxiv_version: 1704.03316v2 · doi: 10.48550/arxiv.1704.03316 · pith_short_12: JBEZUZY3YXHV · pith_short_16: JBEZUZY3YXHVVPYF · pith_short_8: JBEZUZY3

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/JBEZUZY3YXHVVPYFJYL6S7ARWN \
  | 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: 48499a671bc5cf5abf054e17e97c11b3412965e1c9070e1527990ce3c988486e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "17bae49f7fa09d50aa95f06dbd45088d75fedccc5e7deab642fa46c2bb4f9da8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.pop-ph",
    "submitted_at": "2017-04-05T13:33:17Z",
    "title_canon_sha256": "d6962648260711ac1906d4a8d9347d77e1c6e19e1b851f2e3eba255d32884ea6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.03316",
    "kind": "arxiv",
    "version": 2
  }
}