Pith Number

pith:HGH2OEOI

pith:2015:HGH2OEOIKR25GOBF6OMJ7DQBII

not attested not anchored not stored refs pending

Simple rate-adaptive LDPC coding for quantum key distribution

Chuan Wang, Chun-Mei Zhang, Mo Li, Wei Chen, Zheng-Fu Han, Zhen-Qiang Yin

arxiv:1505.06423 v1 · 2015-05-24 · quant-ph · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HGH2OEOIKR25GOBF6OMJ7DQBII}

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	2026-05-18T02:03:47.300558Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

398fa711c85475d33825f3989f8e0142254ceee83d844f29c53983d966c11531

Aliases

arxiv: 1505.06423 · arxiv_version: 1505.06423v1 · doi: 10.48550/arxiv.1505.06423 · pith_short_12: HGH2OEOIKR25 · pith_short_16: HGH2OEOIKR25GOBF · pith_short_8: HGH2OEOI

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/HGH2OEOIKR25GOBF6OMJ7DQBII \
  | 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: 398fa711c85475d33825f3989f8e0142254ceee83d844f29c53983d966c11531

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bf7a176e69fb3c64269b03aa6b00e66e0079d299823f67a18d216d2faf083876",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2015-05-24T10:47:50Z",
    "title_canon_sha256": "612cb09b3efcdf88e0ad172368a38e09637f13429187667d72b1d9fad7759fa1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.06423",
    "kind": "arxiv",
    "version": 1
  }
}