Pith Number

pith:7PFDUKE5

pith:2026:7PFDUKE5NE6UW7GBVATNP2N64A

not attested not anchored not stored refs pending

pykci: A Compact Urban Knowledge Graph for Semantic and Spatial Queries using LLMs

Huynh Duc An Son Nguyen, Lukas Arzoumanidis, Youness Dehbi

arxiv:2607.01605 v1 · 2026-07-02 · cs.DB

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7PFDUKE5NE6UW7GBVATNP2N64A}

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	2026-07-03T01:17:03.122804Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fbca3a289d693d4b7cc1a826d7e9bee013d24f13faac56c5edac3e4912864eeb

Aliases

arxiv: 2607.01605 · arxiv_version: 2607.01605v1 · doi: 10.48550/arxiv.2607.01605 · pith_short_12: 7PFDUKE5NE6U · pith_short_16: 7PFDUKE5NE6UW7GB · pith_short_8: 7PFDUKE5

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/7PFDUKE5NE6UW7GBVATNP2N64A \
  | 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: fbca3a289d693d4b7cc1a826d7e9bee013d24f13faac56c5edac3e4912864eeb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "293b75c4545449af9f42fce27524160295d7a6d559264d3202be24321858bd8d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DB",
    "submitted_at": "2026-07-02T02:07:54Z",
    "title_canon_sha256": "c80692e706f15bde15b9ccbde943f80d61f95a278e1783de688fb716940f72ea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.01605",
    "kind": "arxiv",
    "version": 1
  }
}