Pith Number

pith:AYWIBBAB

pith:2019:AYWIBBABJXKB4ZC4HOMW4XSEC4

not attested not anchored not stored refs pending

The QuaSEFE Problem

Giuseppe Liotta, Henry F\"orster, Maurizio Patrignani, Michael Hoffmann, Michael Kaufmann, Patrizio Angelini, Stephen Kobourov

arxiv:1908.08708 v1 · 2019-08-23 · cs.DS · cs.DM · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AYWIBBABJXKB4ZC4HOMW4XSEC4}

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	2026-07-04T23:59:23.438505Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

062c8084014dd41e645c3b996e5e44172fc1ca4939835cf697513f100f55105a

Aliases

arxiv: 1908.08708 · arxiv_version: 1908.08708v1 · doi: 10.48550/arxiv.1908.08708 · pith_short_12: AYWIBBABJXKB · pith_short_16: AYWIBBABJXKB4ZC4 · pith_short_8: AYWIBBAB

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/AYWIBBABJXKB4ZC4HOMW4XSEC4 \
  | 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: 062c8084014dd41e645c3b996e5e44172fc1ca4939835cf697513f100f55105a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c34d792a8ad389a5bed2da6ff9d2350237ec86b587645f5d3455f2780c6a4b08",
    "cross_cats_sorted": [
      "cs.DM",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2019-08-23T08:07:58Z",
    "title_canon_sha256": "047de17e340e8a8c88586bd9927dc7d0140f083a324dcb253c860e8b83ff13ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.08708",
    "kind": "arxiv",
    "version": 1
  }
}