Pith Number

pith:W5HBK3CW

pith:2020:W5HBK3CWKSHU7LZWPH2UANVLBN

not attested not anchored not stored refs pending

IFC models for (semi)automating common planning checks for building permits

Francesca Noardo, Jantien Stoter, Ken Arroyo Ohori, Teng Wu, Thomas Krijnen

arxiv:2011.03117 v3 · 2020-11-03 · cs.CY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W5HBK3CWKSHU7LZWPH2UANVLBN}

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	2026-07-05T03:41:58.284290Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b74e156c56548f4faf3679f54036ab0b58c14441bb833910bab89069daa65d41

Aliases

arxiv: 2011.03117 · arxiv_version: 2011.03117v3 · doi: 10.48550/arxiv.2011.03117 · pith_short_12: W5HBK3CWKSHU · pith_short_16: W5HBK3CWKSHU7LZW · pith_short_8: W5HBK3CW

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/W5HBK3CWKSHU7LZWPH2UANVLBN \
  | 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: b74e156c56548f4faf3679f54036ab0b58c14441bb833910bab89069daa65d41

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7dfa3aef0aa591c2a04fe1dbcc9a9cd1698de2747090872da4e94500b3e271cd",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2020-11-03T15:29:47Z",
    "title_canon_sha256": "ddc8ce66ec4e7104ad07106583b3c3f060e72a1929406ad5c3fa9335f4c2ebf5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2011.03117",
    "kind": "arxiv",
    "version": 3
  }
}