Pith Number

pith:X7A5GKB3

pith:2015:X7A5GKB3Q4M6YPHFZNR3AHECAF

not attested not anchored not stored refs pending

Practical Quantum Digital Signature

Hua-Lei Yin, Yao Fu, Zeng-Bing Chen

arxiv:1507.03333 v3 · 2015-07-13 · 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{X7A5GKB3Q4M6YPHFZNR3AHECAF}

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	2026-05-18T01:18:44.236615Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bfc1d3283b8719ec3ce5cb63b01c820152ae99b2816554e62ee93ad14f57d568

Aliases

arxiv: 1507.03333 · arxiv_version: 1507.03333v3 · doi: 10.48550/arxiv.1507.03333 · pith_short_12: X7A5GKB3Q4M6 · pith_short_16: X7A5GKB3Q4M6YPHF · pith_short_8: X7A5GKB3

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/X7A5GKB3Q4M6YPHFZNR3AHECAF \
  | 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: bfc1d3283b8719ec3ce5cb63b01c820152ae99b2816554e62ee93ad14f57d568

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "75650d1237fa4713407c99ae59d347e3a9cd892594ce7fd614d6f9dca75f2636",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2015-07-13T06:43:55Z",
    "title_canon_sha256": "232230fabddc0471ba8528c2016cdc8d49f92e6a25db66e43e8956e95c697c6c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.03333",
    "kind": "arxiv",
    "version": 3
  }
}