Pith Number

pith:XVR472KX

pith:2019:XVR472KXB6LVZH2AJSGM44E4JC

not attested not anchored not stored refs pending

Practically feasible robust quantum money with classical verification

Niraj Kumar

arxiv:1908.04114 v5 · 2019-08-12 · 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{XVR472KXB6LVZH2AJSGM44E4JC}

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	2026-07-05T00:20:53.878467Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd63cfe9570f975c9f404c8cce709c488efe306af6c83638a6eb8d96244f2300

Aliases

arxiv: 1908.04114 · arxiv_version: 1908.04114v5 · doi: 10.48550/arxiv.1908.04114 · pith_short_12: XVR472KXB6LV · pith_short_16: XVR472KXB6LVZH2A · pith_short_8: XVR472KX

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/XVR472KXB6LVZH2AJSGM44E4JC \
  | 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: bd63cfe9570f975c9f404c8cce709c488efe306af6c83638a6eb8d96244f2300

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "55cf8983e488ffd801fbc84ee45dc498adf7511d2bd281fe42c6368669c9feff",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-08-12T12:31:49Z",
    "title_canon_sha256": "1401173d1fcb020cc1d1bceae2e42e064fbfc68bcd24a89ca4757e015f1d74ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.04114",
    "kind": "arxiv",
    "version": 5
  }
}