Pith Number

pith:IOC74K42

pith:2020:IOC74K42U73LKKNABDC5F4PGMV

not attested not anchored not stored refs pending

Assessment of supervised machine learning methods for fluid flows

Kai Fukami, Koji Fukagata, Kunihiko Taira

arxiv:2001.09618 v1 · 2020-01-27 · physics.flu-dyn · physics.comp-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IOC74K42U73LKKNABDC5F4PGMV}

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	2026-07-05T00:48:53.757740Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4385fe2b9aa7f6b529a008c5d2f1e6655cae237932cb2581ae204fb46d8bbd3e

Aliases

arxiv: 2001.09618 · arxiv_version: 2001.09618v1 · doi: 10.48550/arxiv.2001.09618 · pith_short_12: IOC74K42U73L · pith_short_16: IOC74K42U73LKKNA · pith_short_8: IOC74K42

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/IOC74K42U73LKKNABDC5F4PGMV \
  | 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: 4385fe2b9aa7f6b529a008c5d2f1e6655cae237932cb2581ae204fb46d8bbd3e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f26cc3beb7d2cc922faed0e0891b79c7c6f003cfb36479319c3c3fb1eadd31c",
    "cross_cats_sorted": [
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2020-01-27T07:58:49Z",
    "title_canon_sha256": "aa3e58a590e65daf8c22a23e9f2c0138106023617afed6c7fbbe2ac72ec48f82"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.09618",
    "kind": "arxiv",
    "version": 1
  }
}