Pith Number

pith:UFK62ZI5

pith:2019:UFK62ZI5Q7PC5HPBX2R4ROHBNU

not attested not anchored not stored refs pending

Alteration of helical vortex core without change in flow topology

Clara M. Velte, Martin O. L. Hansen, Valery L. Okulov

arxiv:1906.06391 v1 · 2019-06-14 · 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{UFK62ZI5Q7PC5HPBX2R4ROHBNU}

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	2026-05-17T23:43:13.830273Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a155ed651d87de2e9de1bea3c8b8e16d0fe89af2aea2658b589ec3597bd28fa8

Aliases

arxiv: 1906.06391 · arxiv_version: 1906.06391v1 · doi: 10.48550/arxiv.1906.06391 · pith_short_12: UFK62ZI5Q7PC · pith_short_16: UFK62ZI5Q7PC5HPB · pith_short_8: UFK62ZI5

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/UFK62ZI5Q7PC5HPBX2R4ROHBNU \
  | 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: a155ed651d87de2e9de1bea3c8b8e16d0fe89af2aea2658b589ec3597bd28fa8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ca74e0b5ae4949ac56a183ee17413c0859ee7c68a2c71f3de6b9d21441caf8a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2019-06-14T20:25:55Z",
    "title_canon_sha256": "7f1baed7a48d420c38acce706650e88d5f0341757623b2ae6a2bdcb34faa0f5e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.06391",
    "kind": "arxiv",
    "version": 1
  }
}