Pith Number

pith:2HCUGBP5

pith:2019:2HCUGBP5E54BSBI2NTSW7ULNI4

not attested not anchored not stored refs pending

A note on self-improving sorting with hidden partitions

Kai Jin, Man-Kwun Chiu, Siu-Wing Cheng

arxiv:1902.00219 v1 · 2019-02-01 · cs.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2HCUGBP5E54BSBI2NTSW7ULNI4}

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	2026-05-17T23:54:57.998752Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1c54305fd277819051a6ce56fd16d4719e016b003910accd7b8213c084f89aa

Aliases

arxiv: 1902.00219 · arxiv_version: 1902.00219v1 · doi: 10.48550/arxiv.1902.00219 · pith_short_12: 2HCUGBP5E54B · pith_short_16: 2HCUGBP5E54BSBI2 · pith_short_8: 2HCUGBP5

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/2HCUGBP5E54BSBI2NTSW7ULNI4 \
  | 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: d1c54305fd277819051a6ce56fd16d4719e016b003910accd7b8213c084f89aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9355861d5fa70d105b3900fee902033d821463108c659e7693368e9739bddaa6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2019-02-01T08:26:43Z",
    "title_canon_sha256": "68598dde39a148e16e8afc1411b8dc8aab72e92d6b8d4be36092e60da8128003"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.00219",
    "kind": "arxiv",
    "version": 1
  }
}