Pith Number

pith:WTVK7U4D

pith:2000:WTVK7U4DIWEFYZ3EX2G2JQCNK4

not attested not anchored not stored refs pending

Radiation from a Superluminal Source

Kirk T. McDonald

arxiv:physics/0003053 v1 · 2000-03-23 · physics.acc-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{WTVK7U4DIWEFYZ3EX2G2JQCNK4}

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	2026-07-04T14:43:13.887852Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4eaafd38345885c6764be8da4c04d5707a36ad4f85707f2d26a97d64c1df645

Aliases

arxiv: physics/0003053 · arxiv_version: physics/0003053v1 · doi: 10.48550/arxiv.physics/0003053 · pith_short_12: WTVK7U4DIWEF · pith_short_16: WTVK7U4DIWEFYZ3E · pith_short_8: WTVK7U4D

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/WTVK7U4DIWEFYZ3EX2G2JQCNK4 \
  | 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: b4eaafd38345885c6764be8da4c04d5707a36ad4f85707f2d26a97d64c1df645

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "906b9469abe8e95d0794d9baffdde91fe8d5b40a1077dc07bd738945c8d407e8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "physics.acc-ph",
    "submitted_at": "2000-03-23T23:34:26Z",
    "title_canon_sha256": "c02c2b0bda6eb17b8e0f6a0e08032ac66d370dc9cc3c9de096503aa35445a1e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0003053",
    "kind": "arxiv",
    "version": 1
  }
}