Pith Number

pith:TR4ZE24U

pith:2022:TR4ZE24UTBYULQPCL2XLYD4JDL

not attested not anchored not stored refs pending

Efficient Classification of Locally Checkable Problems in Regular Trees

Alkida Balliu, Dennis Olivetti, Jan Studen\'y, Jukka Suomela, Sebastian Brandt, Yi-Jun Chang

arxiv:2202.08544 v2 · 2022-02-17 · cs.DC · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TR4ZE24UTBYULQPCL2XLYD4JDL}

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	2026-07-05T04:54:02.268260Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9c79926b94987145c1e25eaebc0f891ac9c50f3eafad24489f84fcd2f1262442

Aliases

arxiv: 2202.08544 · arxiv_version: 2202.08544v2 · doi: 10.48550/arxiv.2202.08544 · pith_short_12: TR4ZE24UTBYU · pith_short_16: TR4ZE24UTBYULQPC · pith_short_8: TR4ZE24U

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/TR4ZE24UTBYULQPCL2XLYD4JDL \
  | 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: 9c79926b94987145c1e25eaebc0f891ac9c50f3eafad24489f84fcd2f1262442

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fdb8b24cfc7168f5b1212d5b7c17f8db74ccd0090a205dfde7eea71f2c5dbb44",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DC",
    "submitted_at": "2022-02-17T09:39:26Z",
    "title_canon_sha256": "e65645eec16694d9e2c9f9014d5bde636f54153ccd10da39cfb26966087d526d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2202.08544",
    "kind": "arxiv",
    "version": 2
  }
}