Pith Number

pith:2DK4IG5M

pith:2019:2DK4IG5M7JXJTU2HOAZ2PGUJC3

not attested not anchored not stored refs pending

Spatio-Temporal Alignments: Optimal transport through space and time

Alexandre Gramfort, Hicham Janati, Marco Cuturi

arxiv:1910.03860 v3 · 2019-10-09 · stat.ML · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2DK4IG5M7JXJTU2HOAZ2PGUJC3}

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	2026-07-05T00:18:11.288395Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d0d5c41bacfa6e99d3477033a79a8916c0242bd1fecd6b2d6fd2bb124b7233b8

Aliases

arxiv: 1910.03860 · arxiv_version: 1910.03860v3 · doi: 10.48550/arxiv.1910.03860 · pith_short_12: 2DK4IG5M7JXJ · pith_short_16: 2DK4IG5M7JXJTU2H · pith_short_8: 2DK4IG5M

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/2DK4IG5M7JXJTU2HOAZ2PGUJC3 \
  | 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: d0d5c41bacfa6e99d3477033a79a8916c0242bd1fecd6b2d6fd2bb124b7233b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ab9ba17074303750cb1fd5f49c0cb5e3c3b10bcf36a5925c313adf40df9ac6b",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2019-10-09T09:22:41Z",
    "title_canon_sha256": "3bcd495a70a082ad27f0c7ca12b026b9d436f2282b73d5d1149d3306e1c2b1c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1910.03860",
    "kind": "arxiv",
    "version": 3
  }
}