Pith Number

pith:4SWZFWJV

pith:2014:4SWZFWJVIF2Z4I3A644CQ5EKNF

not attested not anchored not stored refs pending

Two-Colour Free Electron Laser with Wide Frequency Separation using a Single Monoenergetic Electron Beam

B.W.J. McNeil, L.T. Campbell, S. Reiche

arxiv:1405.3144 v2 · 2014-05-13 · 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{4SWZFWJVIF2Z4I3A644CQ5EKNF}

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	2026-05-18T01:43:13.056198Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4ad92d93541759e2360f73828748a69642f035565845f61962685d1c3ce9b1f

Aliases

arxiv: 1405.3144 · arxiv_version: 1405.3144v2 · doi: 10.48550/arxiv.1405.3144 · pith_short_12: 4SWZFWJVIF2Z · pith_short_16: 4SWZFWJVIF2Z4I3A · pith_short_8: 4SWZFWJV

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/4SWZFWJVIF2Z4I3A644CQ5EKNF \
  | 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: e4ad92d93541759e2360f73828748a69642f035565845f61962685d1c3ce9b1f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c35fb795cffb3fac645310c83f9ee90122375eac36677a16f499d0fbb4587333",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.acc-ph",
    "submitted_at": "2014-05-13T13:36:45Z",
    "title_canon_sha256": "d9f24eba25624297f5550f9eb5791684288aa5548ab3fdb2af2ca9218b72689d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.3144",
    "kind": "arxiv",
    "version": 2
  }
}