Pith Number

pith:XSQLJCDJ

pith:2014:XSQLJCDJLSSEHN2FQ5JEFD7U3W

not attested not anchored not stored refs pending

Replicating the benefits of closed timelike curves without breaking causality

Christian Weedbrook, Jayne Thompson, Jing Yan Haw, Mile Gu, Ping Koy Lam, Syed M. Assad, Timothy C. Ralph, Vlatko Vedral, Xiao Yuan

arxiv:1412.5596 v1 · 2014-12-17 · quant-ph · 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{XSQLJCDJLSSEHN2FQ5JEFD7U3W}

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	2026-05-18T01:25:39.574430Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bca0b488695ca443b7458752428ff4ddbeaab021c40a0161849d3308e640f642

Aliases

arxiv: 1412.5596 · arxiv_version: 1412.5596v1 · doi: 10.48550/arxiv.1412.5596 · pith_short_12: XSQLJCDJLSSE · pith_short_16: XSQLJCDJLSSEHN2F · pith_short_8: XSQLJCDJ

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/XSQLJCDJLSSEHN2FQ5JEFD7U3W \
  | 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: bca0b488695ca443b7458752428ff4ddbeaab021c40a0161849d3308e640f642

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ec99b4bd46792e91cf14aa2b740957f3dee3fbfa6d6b3b88531c0a588c40bac",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2014-12-17T21:00:13Z",
    "title_canon_sha256": "4303097e21fcf9354ca18f5ab874df3a5777573e173960947ae0a982d298efd8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.5596",
    "kind": "arxiv",
    "version": 1
  }
}