Pith Number

pith:BVYCWUBA

pith:2012:BVYCWUBAQPV7Z2EQMCZDCA77IH

not attested not anchored not stored refs pending

Extending the Reach of QKD Using Relays

Simon J. D. Phoenix, Stephen M. Barnett

arxiv:1203.0628 v1 · 2012-03-03 · 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{BVYCWUBAQPV7Z2EQMCZDCA77IH}

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	2026-05-18T00:58:18.477558Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d702b502083ebfce89060b23103ff41e8f97bcd387e994824cc29c1e3c045fa

Aliases

arxiv: 1203.0628 · arxiv_version: 1203.0628v1 · doi: 10.48550/arxiv.1203.0628 · pith_short_12: BVYCWUBAQPV7 · pith_short_16: BVYCWUBAQPV7Z2EQ · pith_short_8: BVYCWUBA

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/BVYCWUBAQPV7Z2EQMCZDCA77IH \
  | 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: 0d702b502083ebfce89060b23103ff41e8f97bcd387e994824cc29c1e3c045fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "32e9c62f0a413d42b7162e5db8d2ecb55061e17fe6ff36641d981d1925f09426",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-03-03T08:53:40Z",
    "title_canon_sha256": "99a057fcb8e413a3fd527f4470be394bfb5157e3e14cf1db7693ae179793602a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.0628",
    "kind": "arxiv",
    "version": 1
  }
}