Pith Number

pith:WSPHFWAS

pith:2025:WSPHFWAS6TLR5ZHFCE2Y445K5G

not attested not anchored not stored refs pending

On bifurcations and traction forces on an obstacle in incompressible flow

Jakub Cach, Jan Blechta, Karel T\r{u}ma, Sebastian Schwarzacher

arxiv:2512.15424 v2 · 2025-12-17 · physics.flu-dyn · cs.NA · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WSPHFWAS6TLR5ZHFCE2Y445K5G}

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	2026-06-24T01:14:24.036571Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b49e72d812f4d71ee4e511358e73aae98920f2605533e979a2138e5e6a30956c

Aliases

arxiv: 2512.15424 · arxiv_version: 2512.15424v2 · doi: 10.48550/arxiv.2512.15424 · pith_short_12: WSPHFWAS6TLR · pith_short_16: WSPHFWAS6TLR5ZHF · pith_short_8: WSPHFWAS

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/WSPHFWAS6TLR5ZHFCE2Y445K5G \
  | 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: b49e72d812f4d71ee4e511358e73aae98920f2605533e979a2138e5e6a30956c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "712ed377fa1750affe83b0ca364070da9bb1562894b2024646ab1acddeb20f2f",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2025-12-17T13:14:55Z",
    "title_canon_sha256": "70be774c71c8bdd553bbc13c77a35b26d673be03545bef6bd0adbde028c36f08"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2512.15424",
    "kind": "arxiv",
    "version": 2
  }
}