Pith Number

pith:6QZQ5FO7

pith:2025:6QZQ5FO767LFQB3ZQRHL3GGOMB

not attested not anchored not stored refs pending

Resultant force on grains of a real sand dune: How to measure it?

Carlos A. Alvarez, Danilo S. Borges, Erick M. Franklin, Renato F. Miotto, William R. Wolf

arxiv:2501.05869 v1 · 2025-01-10 · physics.geo-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{6QZQ5FO767LFQB3ZQRHL3GGOMB}

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	2026-07-05T11:57:54.210000Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f4330e95dff7d6580779844ebd98ce604cae83f53bd6336041de39fd522b1220

Aliases

arxiv: 2501.05869 · arxiv_version: 2501.05869v1 · doi: 10.48550/arxiv.2501.05869 · pith_short_12: 6QZQ5FO767LF · pith_short_16: 6QZQ5FO767LFQB3Z · pith_short_8: 6QZQ5FO7

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/6QZQ5FO767LFQB3ZQRHL3GGOMB \
  | 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: f4330e95dff7d6580779844ebd98ce604cae83f53bd6336041de39fd522b1220

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26e972ce09ed850d12f53ddf6638d53ef99658788c4fce37fb34e7dd44b34f78",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "physics.geo-ph",
    "submitted_at": "2025-01-10T11:10:26Z",
    "title_canon_sha256": "ef46272ede240b86bdf5977ad3efd3357342f287cea90172c3b09ffd9b57c9ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2501.05869",
    "kind": "arxiv",
    "version": 1
  }
}