Pith Number

pith:2O57ELGI

pith:2017:2O57ELGIXP5IQY37M6ZAEQAWFZ

not attested not anchored not stored refs pending

A security proof of continuous-variable QKD using three coherent states

Christian Weedbrook, Kamil Bradler

arxiv:1709.01758 v2 · 2017-09-06 · quant-ph · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2O57ELGIXP5IQY37M6ZAEQAWFZ}

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	2026-05-18T00:23:33.745073Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3bbf22cc8bbfa88637f67b20240162e4a34e6b87adbffd51c7c7e6e1c09ea6f

Aliases

arxiv: 1709.01758 · arxiv_version: 1709.01758v2 · doi: 10.48550/arxiv.1709.01758 · pith_short_12: 2O57ELGIXP5I · pith_short_16: 2O57ELGIXP5IQY37 · pith_short_8: 2O57ELGI

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/2O57ELGIXP5IQY37M6ZAEQAWFZ \
  | 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: d3bbf22cc8bbfa88637f67b20240162e4a34e6b87adbffd51c7c7e6e1c09ea6f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b4e9a17672c437d8a704ede4cf05132a708a62f2f81457fb4ac2ae27e27e0344",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2017-09-06T10:46:25Z",
    "title_canon_sha256": "287197f2eec9711fa5c6c004ed203320d680d5c1c085a78e2db7c451d4d747b1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.01758",
    "kind": "arxiv",
    "version": 2
  }
}