Pith Number

pith:LDZKKQON

pith:2013:LDZKKQONCGFBRKWFNQE7RQWZQM

not attested not anchored not stored refs pending

Einstein, the reality of space, and the action-reaction principle

Dennis Lehmkuhl, Harvey R. Brown

arxiv:1306.4902 v1 · 2013-06-20 · physics.hist-ph · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LDZKKQONCGFBRKWFNQE7RQWZQM}

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	2026-05-18T03:20:21.214197Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

58f2a541cd118a18aac56c09f8c2d9830fe4ff66cd75384d0928d49cf2fc1301

Aliases

arxiv: 1306.4902 · arxiv_version: 1306.4902v1 · doi: 10.48550/arxiv.1306.4902 · pith_short_12: LDZKKQONCGFB · pith_short_16: LDZKKQONCGFBRKWF · pith_short_8: LDZKKQON

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/LDZKKQONCGFBRKWFNQE7RQWZQM \
  | 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: 58f2a541cd118a18aac56c09f8c2d9830fe4ff66cd75384d0928d49cf2fc1301

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0134d68bf334f2737d8d8d42278b16b58c268211c625558617feca3a8b888373",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2013-06-20T15:11:47Z",
    "title_canon_sha256": "a7b27709fa6b23a5c2e79a780d3c71a66bac94646b0f6f67c76eb47d4fc01b26"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.4902",
    "kind": "arxiv",
    "version": 1
  }
}