Pith Number

pith:BFNMPDFP

pith:2012:BFNMPDFPQQZUEF3IBURDU5IW4H

not attested not anchored not stored refs pending

Comment on `On quantum effects in spontaneous emission by a relativistic electron beam in an undulator' by G. Geloni, V. Kocharyan and E. Saldin (arXiv:1202.0691)

G.R.M. Robb, R. Bonifacio

arxiv:1203.2634 v1 · 2012-03-12 · physics.acc-ph · quant-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{BFNMPDFPQQZUEF3IBURDU5IW4H}

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	2026-05-18T04:00:15.124330Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

095ac78caf84334217680d223a7516e1c47353f879a6bd0b740bfbc27fadc262

Aliases

arxiv: 1203.2634 · arxiv_version: 1203.2634v1 · doi: 10.48550/arxiv.1203.2634 · pith_short_12: BFNMPDFPQQZU · pith_short_16: BFNMPDFPQQZUEF3I · pith_short_8: BFNMPDFP

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/BFNMPDFPQQZUEF3IBURDU5IW4H \
  | 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: 095ac78caf84334217680d223a7516e1c47353f879a6bd0b740bfbc27fadc262

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "782d12c891f95509c9b9768512aabaee8390a71996c64012a24db3957d8825db",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.acc-ph",
    "submitted_at": "2012-03-12T20:11:33Z",
    "title_canon_sha256": "336fed7af5e3b58fa543846956b8eac0c46d86e8575ba66050c41604164f06bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.2634",
    "kind": "arxiv",
    "version": 1
  }
}