Pith Number

pith:Z4EKZ4NT

pith:2020:Z4EKZ4NTUIALSCRAY2VISA3PPO

not attested not anchored not stored refs pending

Geometric Dataset Distances via Optimal Transport

David Alvarez-Melis, Nicol\`o Fusi

arxiv:2002.02923 v1 · 2020-02-07 · cs.LG · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Z4EKZ4NTUIALSCRAY2VISA3PPO}

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	2026-07-05T00:39:06.434157Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf08acf1b3a200b90a20c6aa89036f7bbb0aa7521f9584d7816fcf09286876f8

Aliases

arxiv: 2002.02923 · arxiv_version: 2002.02923v1 · doi: 10.48550/arxiv.2002.02923 · pith_short_12: Z4EKZ4NTUIAL · pith_short_16: Z4EKZ4NTUIALSCRA · pith_short_8: Z4EKZ4NT

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/Z4EKZ4NTUIALSCRAY2VISA3PPO \
  | 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: cf08acf1b3a200b90a20c6aa89036f7bbb0aa7521f9584d7816fcf09286876f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4318c8fa777b9d47cbf50547e901998f5e4f14fcbb267359332bd3520b8906a7",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2020-02-07T17:51:26Z",
    "title_canon_sha256": "a9260048887fc076692041854bb9488d3eb17e20f825796c797e18e15980abd7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.02923",
    "kind": "arxiv",
    "version": 1
  }
}