Pith Number

pith:2B2ZL4DV

pith:2019:2B2ZL4DVBM2QHY7TGQFCKSWW43

not attested not anchored not stored refs pending

Group level MEG/EEG source imaging via optimal transport: minimum Wasserstein estimates

Alexandre Gramfort (PARIETAL), Bertrand Thirion (PARIETAL), ENSAE ParisTech ), Hicham Janati (ENSAE ParisTech, Marco Cuturi (CREST, PARIETAL), Thomas Bazeille (PARIETAL)

arxiv:1902.04812 v1 · 2019-02-13 · 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{2B2ZL4DVBM2QHY7TGQFCKSWW43}

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	2026-05-17T23:54:05.849857Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d07595f0750b3503e3f3340a254ad6e6eebb3c4cb92cd9da5a88c85c088ae8f7

Aliases

arxiv: 1902.04812 · arxiv_version: 1902.04812v1 · doi: 10.48550/arxiv.1902.04812 · pith_short_12: 2B2ZL4DVBM2Q · pith_short_16: 2B2ZL4DVBM2QHY7T · pith_short_8: 2B2ZL4DV

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/2B2ZL4DVBM2QHY7TGQFCKSWW43 \
  | 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: d07595f0750b3503e3f3340a254ad6e6eebb3c4cb92cd9da5a88c85c088ae8f7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9aadc5babda1f4d00f49b4752544b51a91e8c39c2fa5f5d8ab600a76d6f95e0c",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2019-02-13T09:44:09Z",
    "title_canon_sha256": "3981230be29de8f8d64f7d5bbd087627024279f7abf155d7e3d022ba12874ee9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.04812",
    "kind": "arxiv",
    "version": 1
  }
}