Pith Number

pith:FFSCYFZM

pith:2018:FFSCYFZMEFTWTTDQ2RG3LV4NLU

not attested not anchored not stored refs pending

Effects of energy spread on Brightness and Coherence of undulator sources

Evgeni Saldin, Gianluca Geloni, Ruslan Khubbutdinov, Svitozar Serkez, Vitali Kocharyan

arxiv:1808.05019 v1 · 2018-08-15 · 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{FFSCYFZMEFTWTTDQ2RG3LV4NLU}

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	2026-05-18T00:08:01.891310Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

29642c172c216769cc70d44db5d78d5d26619e343945485d65081952bf6c5d87

Aliases

arxiv: 1808.05019 · arxiv_version: 1808.05019v1 · doi: 10.48550/arxiv.1808.05019 · pith_short_12: FFSCYFZMEFTW · pith_short_16: FFSCYFZMEFTWTTDQ · pith_short_8: FFSCYFZM

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/FFSCYFZMEFTWTTDQ2RG3LV4NLU \
  | 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: 29642c172c216769cc70d44db5d78d5d26619e343945485d65081952bf6c5d87

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bba4ff8b975cc55af88bf57a850d1e25d548a6f9a42601132fc05598a2211d08",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.acc-ph",
    "submitted_at": "2018-08-15T09:55:28Z",
    "title_canon_sha256": "a6431f2e017e74c640bc54a4903ede89af7d8ad4f0c87e2fbffbdde7087fd7c9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.05019",
    "kind": "arxiv",
    "version": 1
  }
}