Pith Number

pith:4UPHWPFC

pith:2018:4UPHWPFCETXB57EYPMU5BKCFN6

not attested not anchored not stored refs pending

Assessment of skin-friction-reduction techniques on a turbulent wing section

A. Stroh, B. Frohnapfel, M. Atzori, P. Schlatter, R. Vinuesa

arxiv:1812.03762 v1 · 2018-12-10 · physics.flu-dyn

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4UPHWPFCETXB57EYPMU5BKCFN6}

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	2026-05-17T23:58:43.930544Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e51e7b3ca224ee1efc987b29d0a8456f894e5cf44aa1ac3d73bd316817cdf950

Aliases

arxiv: 1812.03762 · arxiv_version: 1812.03762v1 · doi: 10.48550/arxiv.1812.03762 · pith_short_12: 4UPHWPFCETXB · pith_short_16: 4UPHWPFCETXB57EY · pith_short_8: 4UPHWPFC

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/4UPHWPFCETXB57EYPMU5BKCFN6 \
  | 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: e51e7b3ca224ee1efc987b29d0a8456f894e5cf44aa1ac3d73bd316817cdf950

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c42a1c171c29df2ea6581f32786350f955cc47980acd6e82ed86fd5b1ddd4c12",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2018-12-10T12:41:55Z",
    "title_canon_sha256": "ef4f35528f7036e8cfd16680805957fb11d237b26598ad534adc9cec4fd64021"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.03762",
    "kind": "arxiv",
    "version": 1
  }
}