Pith Number

pith:ZPQZYJRF

pith:2013:ZPQZYJRFZ5OTCCEQFVIERRRKSY

not attested not anchored not stored refs pending

Smart Cities Software from the developer's point of view

Dmitry Namiot, Manfred Schneps-Schneppe

arxiv:1303.7115 v1 · 2013-03-28 · cs.CY · cs.NI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZPQZYJRFZ5OTCCEQFVIERRRKSY}

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	2026-05-18T03:29:38.226129Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cbe19c2625cf5d3108902d5048c62a960781f50e7ffd07e49cda84606220d46c

Aliases

arxiv: 1303.7115 · arxiv_version: 1303.7115v1 · doi: 10.48550/arxiv.1303.7115 · pith_short_12: ZPQZYJRFZ5OT · pith_short_16: ZPQZYJRFZ5OTCCEQ · pith_short_8: ZPQZYJRF

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/ZPQZYJRFZ5OTCCEQFVIERRRKSY \
  | 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: cbe19c2625cf5d3108902d5048c62a960781f50e7ffd07e49cda84606220d46c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6a513dbadb45e931e8a31a68ff7433f6314386847b0d08c36b600010b34ba34",
    "cross_cats_sorted": [
      "cs.NI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2013-03-28T12:53:22Z",
    "title_canon_sha256": "2d86faf7473b305b18eccc6287fd69b97f26ad8cd33225f8a08763758396b520"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.7115",
    "kind": "arxiv",
    "version": 1
  }
}