Pith Number

pith:7SQ27BRD

pith:2018:7SQ27BRDBXKD76AQJ5OIPB2E7O

not attested not anchored not stored refs pending

Concrete Semantics with Coq and CoqHammer

Burak Ekici, Cezary Kaliszyk, {\L}ukasz Czajka

arxiv:1808.06413 v1 · 2018-08-20 · 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{7SQ27BRDBXKD76AQJ5OIPB2E7O}

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	2026-05-18T00:07:45.026421Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fca1af86230dd43ff8104f5c878744fb9b64ad479c7b3a4846f7f1b0e11e0622

Aliases

arxiv: 1808.06413 · arxiv_version: 1808.06413v1 · doi: 10.48550/arxiv.1808.06413 · pith_short_12: 7SQ27BRDBXKD · pith_short_16: 7SQ27BRDBXKD76AQ · pith_short_8: 7SQ27BRD

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/7SQ27BRDBXKD76AQJ5OIPB2E7O \
  | 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: fca1af86230dd43ff8104f5c878744fb9b64ad479c7b3a4846f7f1b0e11e0622

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "047e1f2900456983f148f2c2a1960e956c3bda6c97be4c33e6b4e8977df9362f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2018-08-20T12:15:09Z",
    "title_canon_sha256": "ad46b7da768d1e865c9592f9398f26d9064042f7b9dbbf42eca178456ae030d4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.06413",
    "kind": "arxiv",
    "version": 1
  }
}