Pith Number

pith:SP4H6CMV

pith:2013:SP4H6CMVPJ4F6GLMPNKRKCTWR2

not attested not anchored not stored refs pending

Twin paradox with macroscopic clocks in superconducting circuits

Andrzej Dragan, Carlos Sab\'in, G\"oran Johansson, Ida-Maria Svensson, Ivette Fuentes, Joel Lindkvist, Per Delsing

arxiv:1401.0129 v2 · 2013-12-31 · quant-ph · cond-mat.mes-hall · gr-qc

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SP4H6CMVPJ4F6GLMPNKRKCTWR2}

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	2026-05-18T02:32:22.459088Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93f87f09957a785f196c7b55150a768ea91b1c9bcde49cd5e4ca6e6530bc3f70

Aliases

arxiv: 1401.0129 · arxiv_version: 1401.0129v2 · doi: 10.48550/arxiv.1401.0129 · pith_short_12: SP4H6CMVPJ4F · pith_short_16: SP4H6CMVPJ4F6GLM · pith_short_8: SP4H6CMV

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/SP4H6CMVPJ4F6GLMPNKRKCTWR2 \
  | 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: 93f87f09957a785f196c7b55150a768ea91b1c9bcde49cd5e4ca6e6530bc3f70

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f1879b8d263598eebf6e3a267e74744b3071e14390c23bae429f7e6db8bfd66b",
    "cross_cats_sorted": [
      "cond-mat.mes-hall",
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-12-31T11:10:57Z",
    "title_canon_sha256": "f5819af193c46698fe74fbab331324d11c80ef016c32d5182df9a35f9e3b9872"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.0129",
    "kind": "arxiv",
    "version": 2
  }
}