Pith Number

pith:U3EYKY3Q

pith:2020:U3EYKY3QSL7N6GWKYDL54YXGYL

not attested not anchored not stored refs pending

On the Construction of a Post-Quantum Blockchain for Smart City

Chien-Ming Chen, Jiahui Chen, Muchuang Hu, Wensheng Gan

arxiv:2012.15799 v1 · 2020-12-31 · cs.CR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U3EYKY3QSL7N6GWKYDL54YXGYL}

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	2026-07-05T02:27:55.206400Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a6c985637092fedf1acac0d7de62e6c2f44493b1a2d6ee5cc90f7f9b615340ba

Aliases

arxiv: 2012.15799 · arxiv_version: 2012.15799v1 · doi: 10.48550/arxiv.2012.15799 · pith_short_12: U3EYKY3QSL7N · pith_short_16: U3EYKY3QSL7N6GWK · pith_short_8: U3EYKY3Q

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/U3EYKY3QSL7N6GWKYDL54YXGYL \
  | 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: a6c985637092fedf1acac0d7de62e6c2f44493b1a2d6ee5cc90f7f9b615340ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "19b1d9d140d271c3520e184dbca3398ccf5974d0b756a0dbba9728b6b02355fd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2020-12-31T18:21:16Z",
    "title_canon_sha256": "c0abb607e1e3ff6d10cb23fa0f79733c3de952c65c233c1c123d82a35d48a30a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2012.15799",
    "kind": "arxiv",
    "version": 1
  }
}