Pith Number

pith:Q66A2TP4

pith:2020:Q66A2TP4DTBPB5XDLRXXF5KZBN

not attested not anchored not stored refs pending

750 MHz radio frequency quadrupole with trapezoidal vanes for carbon ion therapy

Alessandra M. Lombardi, Alexej Grudiev, Hermann W. Pommerenke, Vittorio Bencini

arxiv:2007.10739 v2 · 2020-07-21 · 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{Q66A2TP4DTBPB5XDLRXXF5KZBN}

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	2026-07-05T02:04:09.806665Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87bc0d4dfc1cc2f0f6e35c6f72f5590b658aa78400d783ac626a60e47acfd886

Aliases

arxiv: 2007.10739 · arxiv_version: 2007.10739v2 · doi: 10.48550/arxiv.2007.10739 · pith_short_12: Q66A2TP4DTBP · pith_short_16: Q66A2TP4DTBPB5XD · pith_short_8: Q66A2TP4

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/Q66A2TP4DTBPB5XDLRXXF5KZBN \
  | 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: 87bc0d4dfc1cc2f0f6e35c6f72f5590b658aa78400d783ac626a60e47acfd886

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c6a6c227d2232bc7d5bfbc8d77a7daeaf68b3226640175caf4b88641e855d2d",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.acc-ph",
    "submitted_at": "2020-07-21T12:00:41Z",
    "title_canon_sha256": "5f594df30d64d942fbd4b630f228ea899998257848351ac32e86db2153e33375"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2007.10739",
    "kind": "arxiv",
    "version": 2
  }
}