Pith Number

pith:CJ63EUY4

pith:2012:CJ63EUY4K7DWEE3KGCAWMS7NGJ

not attested not anchored not stored refs pending

Constraints on photon pulse duration from longitudinal electron beam diagnostics at a soft X-ray free-electron laser

B. Schmidt, C. Behrens, Ch. Gerth, E.A. Schneidmiller, M.V. Yurkov, N. Gerasimova, S. Serkez, S. Wesch

arxiv:1201.4316 v2 · 2012-01-20 · 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{CJ63EUY4K7DWEE3KGCAWMS7NGJ}

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	2026-05-18T03:59:28.950488Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

127db2531c57c762136a3081664bed3240c135d53db82615070ca7f89e491054

Aliases

arxiv: 1201.4316 · arxiv_version: 1201.4316v2 · doi: 10.48550/arxiv.1201.4316 · pith_short_12: CJ63EUY4K7DW · pith_short_16: CJ63EUY4K7DWEE3K · pith_short_8: CJ63EUY4

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/CJ63EUY4K7DWEE3KGCAWMS7NGJ \
  | 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: 127db2531c57c762136a3081664bed3240c135d53db82615070ca7f89e491054

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb5c98b1890443a251c92c516de71e6bcf17e5d9b0da10bceb28c5cfb18eacfb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.acc-ph",
    "submitted_at": "2012-01-20T15:13:03Z",
    "title_canon_sha256": "88a8b5e549a376ab821f4940d18b1a0bcd85f83afba9961470e0611dfdffec0b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.4316",
    "kind": "arxiv",
    "version": 2
  }
}