Pith Number

pith:ARXRDWNL

pith:2015:ARXRDWNLB4FYNVPZ2YUR666JK5

not attested not anchored not stored refs pending

Drag force in wind tunnels: a new method

Daniel Girardi, P.M.C. de Oliveira, P.V.S. Souza

arxiv:1505.01101 v4 · 2015-05-05 · 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{ARXRDWNLB4FYNVPZ2YUR666JK5}

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	2026-05-18T01:17:25.768414Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

046f11d9ab0f0b86d5f9d6291f7bc9576ab4365958f10e624f118361507653aa

Aliases

arxiv: 1505.01101 · arxiv_version: 1505.01101v4 · doi: 10.48550/arxiv.1505.01101 · pith_short_12: ARXRDWNLB4FY · pith_short_16: ARXRDWNLB4FYNVPZ · pith_short_8: ARXRDWNL

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/ARXRDWNLB4FYNVPZ2YUR666JK5 \
  | 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: 046f11d9ab0f0b86d5f9d6291f7bc9576ab4365958f10e624f118361507653aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f43003ac4e2138afe73070f3e928216c17b22e28d3aab2c4f6124e6d57062dac",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2015-05-05T18:06:25Z",
    "title_canon_sha256": "6e4c4a86b7853c83aafd4d384ce1ea67e8dafa2acac957531d17321924fa561e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.01101",
    "kind": "arxiv",
    "version": 4
  }
}