Pith Number

pith:R7YASSWW

pith:1999:R7YASSWWEOWPLNI7CPOT2DVCRA

not attested not anchored not stored refs pending

The Fabric of Space-time II: Gravity by Photon Exchange

Charles Francis

arxiv:physics/9906060 v2 · 1999-06-30 · physics.gen-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{R7YASSWWEOWPLNI7CPOT2DVCRA}

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	2026-07-04T14:45:01.841738Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8ff0094ad623acf5b51f13dd3d0ea288174fda535c188cd2f587505557dc2941

Aliases

arxiv: physics/9906060 · arxiv_version: physics/9906060v2 · doi: 10.48550/arxiv.physics/9906060 · pith_short_12: R7YASSWWEOWP · pith_short_16: R7YASSWWEOWPLNI7 · pith_short_8: R7YASSWW

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/R7YASSWWEOWPLNI7CPOT2DVCRA \
  | 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: 8ff0094ad623acf5b51f13dd3d0ea288174fda535c188cd2f587505557dc2941

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e3a355041cf668fd930a7cf46d4f5eca03e741289ff3619eb419b691aa46e325",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "physics.gen-ph",
    "submitted_at": "1999-06-30T07:28:22Z",
    "title_canon_sha256": "6cf120d7fec3312a2356aed4fe896e5844bdb30ea1ef17b7e93706bf50f05ac0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/9906060",
    "kind": "arxiv",
    "version": 2
  }
}