Pith Number

pith:4W3H7MEZ

pith:2009:4W3H7MEZ5KEGERNOJO3CCPNBKC

not attested not anchored not stored refs pending

Quantum Repeaters based on Single Trapped Ions

Christoph Simon (GAP), Nicolas Sangouard (MPQ), Romain Dubessy (MPQ)

arxiv:0902.3127 v2 · 2009-02-18 · 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{4W3H7MEZ5KEGERNOJO3CCPNBKC}

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	2026-05-18T02:14:47.166305Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5b67fb099ea886245ae4bb6213da150ad8f2d5a9c7fcb7dfe32db93f48968f7

Aliases

arxiv: 0902.3127 · arxiv_version: 0902.3127v2 · doi: 10.48550/arxiv.0902.3127 · pith_short_12: 4W3H7MEZ5KEG · pith_short_16: 4W3H7MEZ5KEGERNO · pith_short_8: 4W3H7MEZ

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/4W3H7MEZ5KEGERNOJO3CCPNBKC \
  | 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: e5b67fb099ea886245ae4bb6213da150ad8f2d5a9c7fcb7dfe32db93f48968f7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a522d95a98ad8e93b54cb832b3ecfa080b79b9d94c876a0614fea665bdc00852",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-02-18T13:17:05Z",
    "title_canon_sha256": "d358f7d717349da6a4f69164094bbee5faf97f60b845977bd01bed861679f2e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.3127",
    "kind": "arxiv",
    "version": 2
  }
}