Pith Number

pith:Z4SIEJFW

pith:2020:Z4SIEJFWL7MMJ77ISHXIVWI335

not attested not anchored not stored refs pending

Effect of axially varying sandpaper roughness on bubbly drag reduction in Taylor-Couette turbulence

Chao Sun, Dennis Bakhuis, Detlef Lohse, Pim A. Bullee, Rob G. H. Lammertink, Rodrigo Ezeta, Sander G. Huisman

arxiv:2006.01930 v2 · 2020-06-02 · 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{Z4SIEJFWL7MMJ77ISHXIVWI335}

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	2026-07-05T01:24:00.637683Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf248224b65fd8c4ffe891ee8ad91bdf460e49dd0587a3f68cf2142cfb85f3b8

Aliases

arxiv: 2006.01930 · arxiv_version: 2006.01930v2 · doi: 10.48550/arxiv.2006.01930 · pith_short_12: Z4SIEJFWL7MM · pith_short_16: Z4SIEJFWL7MMJ77I · pith_short_8: Z4SIEJFW

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/Z4SIEJFWL7MMJ77ISHXIVWI335 \
  | 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: cf248224b65fd8c4ffe891ee8ad91bdf460e49dd0587a3f68cf2142cfb85f3b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6f7220da2b8676b817bd692457ef2c6dfa0e5255e2736ec3afb33cc8480be8c7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2020-06-02T20:36:11Z",
    "title_canon_sha256": "06b2037d450dedb6b55e4024ad69caef0a4eeb6d9feb59d37eae8068bf5145ba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2006.01930",
    "kind": "arxiv",
    "version": 2
  }
}