Pith Number

pith:FRCCWTZ7

pith:2013:FRCCWTZ7W2KX5NG5QHWQWTTIZR

not attested not anchored not stored refs pending

Michelson interferometer null may confirm transverse Doppler Effect

Robert A. Woodruff

arxiv:1402.4781 v2 · 2013-12-17 · 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{FRCCWTZ7W2KX5NG5QHWQWTTIZR}

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	2026-05-18T02:50:12.836535Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c442b4f3fb6957eb4dd81ed0b4e68cc79950788028723a321d22abc2b6b9bcb

Aliases

arxiv: 1402.4781 · arxiv_version: 1402.4781v2 · doi: 10.48550/arxiv.1402.4781 · pith_short_12: FRCCWTZ7W2KX · pith_short_16: FRCCWTZ7W2KX5NG5 · pith_short_8: FRCCWTZ7

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/FRCCWTZ7W2KX5NG5QHWQWTTIZR \
  | 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: 2c442b4f3fb6957eb4dd81ed0b4e68cc79950788028723a321d22abc2b6b9bcb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c0680a71232fb98f28be6c0d3b44a107bdff070efc99206729856f88c5a7ff18",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2013-12-17T23:46:38Z",
    "title_canon_sha256": "59754c2dbefc8ed7dbbd2cf9e95a3ef94fa218c72fbcb85f6ff8310a355e3259"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.4781",
    "kind": "arxiv",
    "version": 2
  }
}