Pith Number

pith:NTY6DMLZ

pith:2018:NTY6DMLZ33BKMLV562RWL33WIN

not attested not anchored not stored refs pending

It Is Easy to Be Wise After the Event: Communicating Finite-State Machines Capture First-Order Logic with "Happened Before"

Benedikt Bollig, Marie Fortin, Paul Gastin

arxiv:1804.10076 v2 · 2018-04-26 · cs.LO · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NTY6DMLZ33BKMLV562RWL33WIN}

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	2026-05-18T00:02:49.442127Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6cf1e1b179dec2a62ebdf6a365ef7643799aa6ad48fafb8af36ed9ba551dfc65

Aliases

arxiv: 1804.10076 · arxiv_version: 1804.10076v2 · doi: 10.48550/arxiv.1804.10076 · pith_short_12: NTY6DMLZ33BK · pith_short_16: NTY6DMLZ33BKMLV5 · pith_short_8: NTY6DMLZ

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/NTY6DMLZ33BKMLV562RWL33WIN \
  | 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: 6cf1e1b179dec2a62ebdf6a365ef7643799aa6ad48fafb8af36ed9ba551dfc65

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b4f7c4b29b72f5aef774aa9ed03d0c04f162a30bc6f0c0c92f2509ac05c02ca",
    "cross_cats_sorted": [
      "cs.FL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2018-04-26T14:16:57Z",
    "title_canon_sha256": "ea4f37d43f6dadeb39dc9683d21fe7278cec86ae12268fb01dc85e40392635c5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.10076",
    "kind": "arxiv",
    "version": 2
  }
}