Pith Number

pith:Y2IJS2YW

pith:2026:Y2IJS2YWIFWI6DANWA2HUKNQBL

not attested not anchored not stored refs pending

Anyone for chess? Analysing chess ratings above high thresholds

Nils Lid Hjort

arxiv:2602.04353 v1 · 2026-02-04 · stat.OT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Y2IJS2YWIFWI6DANWA2HUKNQBL}

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	2026-05-20T00:03:04.517514Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c690996b16416c8f0c0db0347a29b00adf490078bed4155415dacbbf20b891a9

Aliases

arxiv: 2602.04353 · arxiv_version: 2602.04353v1 · doi: 10.48550/arxiv.2602.04353 · pith_short_12: Y2IJS2YWIFWI · pith_short_16: Y2IJS2YWIFWI6DAN · pith_short_8: Y2IJS2YW

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/Y2IJS2YWIFWI6DANWA2HUKNQBL \
  | 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: c690996b16416c8f0c0db0347a29b00adf490078bed4155415dacbbf20b891a9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e9580b7cfe019de4802cd4c2f389aa920e17c00cbbf01ae6bad8433b8a27b40",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.OT",
    "submitted_at": "2026-02-04T09:22:40Z",
    "title_canon_sha256": "1a97d06f466c0462d368b97a3770e60daa455331df5c7b0a72bf5aaa2b3eaf45"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2602.04353",
    "kind": "arxiv",
    "version": 1
  }
}