Pith Number

pith:3KO2YHH6

pith:2014:3KO2YHH66RZNPZ34YFPPERALOZ

not attested not anchored not stored refs pending

Layer Systems for Proving Confluence

Aart Middeldorp, Bertram Felgenhauer, Harald Zankl, Vincent van Oostrom

arxiv:1404.1225 v2 · 2014-04-04 · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3KO2YHH66RZNPZ34YFPPERALOZ}

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	2026-05-18T02:27:44.662524Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

da9dac1cfef472d7e77cc15ef2440b766a41be6145397e8ca1b66df07f7fd10f

Aliases

arxiv: 1404.1225 · arxiv_version: 1404.1225v2 · doi: 10.48550/arxiv.1404.1225 · pith_short_12: 3KO2YHH66RZN · pith_short_16: 3KO2YHH66RZNPZ34 · pith_short_8: 3KO2YHH6

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/3KO2YHH66RZNPZ34YFPPERALOZ \
  | 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: da9dac1cfef472d7e77cc15ef2440b766a41be6145397e8ca1b66df07f7fd10f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac27869f7d6661a0b1ac7d17fc8c3a1277a2124e050f130bbda310534530b341",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2014-04-04T11:55:01Z",
    "title_canon_sha256": "5a6df62b961bbe9a1e26cfaab617d5cf1ad03f0052b3da22010e8d874b5350fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.1225",
    "kind": "arxiv",
    "version": 2
  }
}