Pith Number

pith:P4QRSCLW

pith:2021:P4QRSCLWMHJGUD7LOZ2IMASXUS

not attested not anchored not stored refs pending

UrbanVCA: a vector-based cellular automata framework to simulate the urban land-use change at the land-parcel level

Lefei Li, Linlong Li, Peng Luo, Qingfeng Guan, Shihao Kou, Tao Cheng, Xinyue Ye, Yao Yao, Yaqian Zhai, Yuyang Cai, Zhaotang Liang, Zhenhui Sun

arxiv:2103.08538 v1 · 2021-03-15 · cs.CY · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P4QRSCLWMHJGUD7LOZ2IMASXUS}

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	2026-07-05T02:23:01.784511Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f2119097661d26a0feb7674860257a49e4289c5e6fedeb74c4eb9263d585863

Aliases

arxiv: 2103.08538 · arxiv_version: 2103.08538v1 · doi: 10.48550/arxiv.2103.08538 · pith_short_12: P4QRSCLWMHJG · pith_short_16: P4QRSCLWMHJGUD7L · pith_short_8: P4QRSCLW

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/P4QRSCLWMHJGUD7LOZ2IMASXUS \
  | 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: 7f2119097661d26a0feb7674860257a49e4289c5e6fedeb74c4eb9263d585863

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cd5588c7e3faf29a65129206da1f33f8497ae0e9a4ba9daf866383c88b55d0af",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2021-03-15T17:03:22Z",
    "title_canon_sha256": "afc2769efcee4e66528410c9a3bd4d9edaa192aa5773cc4a45852c8aa7f6280a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.08538",
    "kind": "arxiv",
    "version": 1
  }
}