Pith Number

pith:2Z34KUXH

pith:2012:2Z34KUXHAWVOTVQ4CU53IEU5DC

not attested not anchored not stored refs pending

Weak randomness completely trounces the security of QKD

Colin Wilmott, Jan Bouda, Martin Plesch, Matej Pivoluska

arxiv:1206.1287 v2 · 2012-06-06 · 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{2Z34KUXHAWVOTVQ4CU53IEU5DC}

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	2026-05-18T03:36:25.194819Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d677c552e705aae9d61c153bb4129d18b556531cddbd41821d6f29045327ce38

Aliases

arxiv: 1206.1287 · arxiv_version: 1206.1287v2 · doi: 10.48550/arxiv.1206.1287 · pith_short_12: 2Z34KUXHAWVO · pith_short_16: 2Z34KUXHAWVOTVQ4 · pith_short_8: 2Z34KUXH

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/2Z34KUXHAWVOTVQ4CU53IEU5DC \
  | 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: d677c552e705aae9d61c153bb4129d18b556531cddbd41821d6f29045327ce38

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "48757b6dd6665e90a49c8f3440719047507ff2fdfc67cfc1a4a25910b09bd34a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-06-06T17:51:55Z",
    "title_canon_sha256": "73e3c965ad28ec01627bcf72f371e71c8c4c6923412ad415f7757cd10b311206"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.1287",
    "kind": "arxiv",
    "version": 2
  }
}