Pith Number

pith:NTCZJ5OY

pith:2015:NTCZJ5OY4SEJH7OBIYI2XU6X2J

not attested not anchored not stored refs pending

Tapering studies for Terawatt level X-ray FELs with a superconducting undulator

Claudio Emma, Claudio Pellegrini, Juhao Wu, Paul Emma, Zhirong Huang

arxiv:1501.05988 v1 · 2015-01-24 · 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{NTCZJ5OY4SEJH7OBIYI2XU6X2J}

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	2026-05-18T01:01:01.910434Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6cc594f5d8e48893fdc14611abd3d7d248b32b4aeb0d4bc3c79bc34eb6e767d3

Aliases

arxiv: 1501.05988 · arxiv_version: 1501.05988v1 · doi: 10.48550/arxiv.1501.05988 · pith_short_12: NTCZJ5OY4SEJ · pith_short_16: NTCZJ5OY4SEJH7OB · pith_short_8: NTCZJ5OY

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/NTCZJ5OY4SEJH7OBIYI2XU6X2J \
  | 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: 6cc594f5d8e48893fdc14611abd3d7d248b32b4aeb0d4bc3c79bc34eb6e767d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "82cd224b4c880a8ff2d290e3def96ca984cadc1cdb83edebc7902a720b4d8ad1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.acc-ph",
    "submitted_at": "2015-01-24T02:00:25Z",
    "title_canon_sha256": "511d589bd022f201b8dc236108aeb86c86bf6f985f7876608a7a773534276961"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.05988",
    "kind": "arxiv",
    "version": 1
  }
}