Pith Number

pith:SJPSPXGH

pith:2023:SJPSPXGH2JOUYY33PMXZHL5ILR

not attested not anchored not stored refs pending

Prediction of equivalent sand-grain size and identification of drag-relevant scales of roughness -- a data driven approach

Alexander Stroh, Bettina Frohnapfel, Jiasheng Yang, Pourya Forooghi, Sangseung Lee, Shervin Bagheri

arxiv:2304.08958 v3 · 2023-04-18 · 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{SJPSPXGH2JOUYY33PMXZHL5ILR}

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	2026-07-05T06:45:16.353108Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

925f27dcc7d25d4c637b7b2f93afa85c68cd6a9c76e4f4960b961b185570cfd6

Aliases

arxiv: 2304.08958 · arxiv_version: 2304.08958v3 · doi: 10.48550/arxiv.2304.08958 · pith_short_12: SJPSPXGH2JOU · pith_short_16: SJPSPXGH2JOUYY33 · pith_short_8: SJPSPXGH

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/SJPSPXGH2JOUYY33PMXZHL5ILR \
  | 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: 925f27dcc7d25d4c637b7b2f93afa85c68cd6a9c76e4f4960b961b185570cfd6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "232331626965f595f6afe96188876ab60e2a4e793b7a7faeb09423ac0469c35a",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2023-04-18T12:49:39Z",
    "title_canon_sha256": "254e3e4686e190fb707b71ed76240237333b2f73e3106d69a5154f53ebbad8f1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2304.08958",
    "kind": "arxiv",
    "version": 3
  }
}