Pith Number

pith:FPYRJA3E

pith:2018:FPYRJA3E746JIUKVKX6SJYB6T5

not attested not anchored not stored refs pending

An improved lower bound for superluminal quantum communications

Bruno Cocciaro, Leone Fronzoni, Sandro Faetti

arxiv:1802.00423 v3 · 2018-02-01 · quant-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{FPYRJA3E746JIUKVKX6SJYB6T5}

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	2026-05-18T00:14:46.347047Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2bf1148364ff3c94515555fd24e03e9f60911052be226941c4a337b532847bc1

Aliases

arxiv: 1802.00423 · arxiv_version: 1802.00423v3 · doi: 10.48550/arxiv.1802.00423 · pith_short_12: FPYRJA3E746J · pith_short_16: FPYRJA3E746JIUKV · pith_short_8: FPYRJA3E

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/FPYRJA3E746JIUKVKX6SJYB6T5 \
  | 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: 2bf1148364ff3c94515555fd24e03e9f60911052be226941c4a337b532847bc1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "75b17aede5867c1a52546303555ba847bf204183c17751ce2a2c9d0f697cbffa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2018-02-01T18:33:38Z",
    "title_canon_sha256": "efd14d78c56074f7e7b52466768f06254d2b214bab0dae66dd933ed345ea0036"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.00423",
    "kind": "arxiv",
    "version": 3
  }
}