Pith Number

pith:PW5PWTOE

pith:2015:PW5PWTOEI7KC55FYK3G5OS5XTT

not attested not anchored not stored refs pending

Incrementally Computing Minimal Unsatisfiable Cores of QBFs via a Clause Group Solver API

Florian Lonsing, Uwe Egly

arxiv:1502.02484 v4 · 2015-02-09 · cs.LO

Open paper page JSON What is a Pith Number?

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

Receipt and verification

First computed	2026-05-18T01:32:43.594959Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7dbafb4dc447d42ef4b856cdd74bb79ce814133c3bb3a6e2b04486d79fd1ab5c

Aliases

arxiv: 1502.02484 · arxiv_version: 1502.02484v4 · doi: 10.48550/arxiv.1502.02484

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/PW5PWTOEI7KC55FYK3G5OS5XTT \
  | 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: 7dbafb4dc447d42ef4b856cdd74bb79ce814133c3bb3a6e2b04486d79fd1ab5c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f77d4b8320d8ff3ab68a9f9abda5bf3d428d997ced66a8b05e7ec0027f41642a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2015-02-09T13:48:31Z",
    "title_canon_sha256": "46f7f57b325c55de92454431017abd22e724fe6f64f108efe122395fd4aa3f04"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.02484",
    "kind": "arxiv",
    "version": 4
  }
}