Pith Number

pith:OHPJTW6A

pith:2016:OHPJTW6AHENHXEIMK75YG4MN2G

not attested not anchored not stored refs pending

Mission to the Gravitational Focus of the Sun: A Critical Analysis

Geoffrey A. Landis

arxiv:1604.06351 v2 · 2016-04-21 · astro-ph.EP · astro-ph.IM · gr-qc · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OHPJTW6AHENHXEIMK75YG4MN2G}

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	2026-05-18T00:55:00.264828Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

71de99dbc0391a7b910c57fb83718dd18385ea510f89f57887b2bd6eda84266d

Aliases

arxiv: 1604.06351 · arxiv_version: 1604.06351v2 · doi: 10.48550/arxiv.1604.06351 · pith_short_12: OHPJTW6AHENH · pith_short_16: OHPJTW6AHENHXEIM · pith_short_8: OHPJTW6A

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/OHPJTW6AHENHXEIMK75YG4MN2G \
  | 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: 71de99dbc0391a7b910c57fb83718dd18385ea510f89f57887b2bd6eda84266d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c052a2ce489b3262f0569002223fad309e4c61d2f09cc8d166344b921aacbd7",
    "cross_cats_sorted": [
      "astro-ph.IM",
      "gr-qc",
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2016-04-21T15:08:12Z",
    "title_canon_sha256": "dddea14195026cdc9ec673d50e4a87e98bba2a05ece56f7da1dd770863b19f88"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.06351",
    "kind": "arxiv",
    "version": 2
  }
}