Pith Number

pith:XFCII6UF

pith:2019:XFCII6UFBORIQ762VAJPAOGW2F

not attested not anchored not stored refs pending

Polyvariant Program Specialisation with Property-based Abstraction

IMDEA Software Institute), John P. Gallagher (Roskilde University

arxiv:1908.07189 v1 · 2019-08-20 · cs.LO · cs.PL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XFCII6UFBORIQ762VAJPAOGW2F}

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	2026-07-04T23:58:31.705066Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b944847a850ba2887fdaa812f038d6d15537f3fddcecdf099c44fffe5984fbb8

Aliases

arxiv: 1908.07189 · arxiv_version: 1908.07189v1 · doi: 10.48550/arxiv.1908.07189 · pith_short_12: XFCII6UFBORI · pith_short_16: XFCII6UFBORIQ762 · pith_short_8: XFCII6UF

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/XFCII6UFBORIQ762VAJPAOGW2F \
  | 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: b944847a850ba2887fdaa812f038d6d15537f3fddcecdf099c44fffe5984fbb8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b63881c2b297752ffc2594f84553115d735deb69fcb807f147a555ea9832b8ad",
    "cross_cats_sorted": [
      "cs.PL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2019-08-20T06:36:01Z",
    "title_canon_sha256": "ca1143915c7fbd07816e4afc826ab191978641bca478d6980cf3496521e0aa9f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.07189",
    "kind": "arxiv",
    "version": 1
  }
}