Pith Number

pith:B65EAP5A

pith:2012:B65EAP5A2XE4NXQW77MLHWNMCW

not attested not anchored not stored refs pending

Unconditionally secure device-independent quantum key distribution with only two devices

Adrian Kent, Jonathan Barrett, Roger Colbeck

arxiv:1209.0435 v2 · 2012-09-03 · quant-ph · cs.CR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{B65EAP5A2XE4NXQW77MLHWNMCW}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T03:37:40.922772Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0fba403fa0d5c9c6de16ffd8b3d9ac15bcf43989b0e8a5ed286c7e5de9cf2e77

Aliases

arxiv: 1209.0435 · arxiv_version: 1209.0435v2 · doi: 10.48550/arxiv.1209.0435 · pith_short_12: B65EAP5A2XE4 · pith_short_16: B65EAP5A2XE4NXQW · pith_short_8: B65EAP5A

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/B65EAP5A2XE4NXQW77MLHWNMCW \
  | 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: 0fba403fa0d5c9c6de16ffd8b3d9ac15bcf43989b0e8a5ed286c7e5de9cf2e77

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b2a323d18745ee3bdfb2da05a8261368b5b2993aaa7b231f2bf9224994c4eef",
    "cross_cats_sorted": [
      "cs.CR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-09-03T19:08:28Z",
    "title_canon_sha256": "508f57a8035a421192feaa083b1aeed8b65187a19e63fd1519472ace5c7dafcc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.0435",
    "kind": "arxiv",
    "version": 2
  }
}