Pith Number

pith:YNYK2PXI

pith:2000:YNYK2PXIOPXYRRKZ3UVEJCVFL4

not attested not anchored not stored refs pending

A bounded source cannot emit a unipolar electromagnetic wave

Gennady V. Stupakov, Kirk T. McDonald, Kwang-Je Kim, Max S. Zolotorev

arxiv:physics/0003064 v2 · 2000-03-23 · physics.class-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{YNYK2PXIOPXYRRKZ3UVEJCVFL4}

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	2026-07-04T14:43:14.009647Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c370ad3ee873ef88c559dd2a448aa55f28ba736750660bb4d168d804fdd2d27c

Aliases

arxiv: physics/0003064 · arxiv_version: physics/0003064v2 · doi: 10.48550/arxiv.physics/0003064 · pith_short_12: YNYK2PXIOPXY · pith_short_16: YNYK2PXIOPXYRRKZ · pith_short_8: YNYK2PXI

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/YNYK2PXIOPXYRRKZ3UVEJCVFL4 \
  | 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: c370ad3ee873ef88c559dd2a448aa55f28ba736750660bb4d168d804fdd2d27c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "edf246d54d9c4245d6d979396d7361299d0afa3f8595c5a7cabaaa78912aa0fc",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2000-03-23T22:36:24Z",
    "title_canon_sha256": "b8569c482da50057b12dabac500ff3e5c116e84415320ed6ef6057eef3974eb7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0003064",
    "kind": "arxiv",
    "version": 2
  }
}