Pith Number

pith:QZMITZRV

pith:2019:QZMITZRV57OOQPWVHKQZQUJEEW

not attested not anchored not stored refs pending

Ice Spiral Patterns on the Ocean Surface

Andrei Ludu, Zhi Zong

arxiv:1907.09629 v1 · 2019-07-22 · nlin.PS · 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{QZMITZRV57OOQPWVHKQZQUJEEW}

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	2026-05-17T23:39:50.573940Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

865889e635efdce83ed53aa198512425bea2dc36384d19dce47f12ac4cd69a8f

Aliases

arxiv: 1907.09629 · arxiv_version: 1907.09629v1 · doi: 10.48550/arxiv.1907.09629 · pith_short_12: QZMITZRV57OO · pith_short_16: QZMITZRV57OOQPWV · pith_short_8: QZMITZRV

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/QZMITZRV57OOQPWVHKQZQUJEEW \
  | 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: 865889e635efdce83ed53aa198512425bea2dc36384d19dce47f12ac4cd69a8f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a6acf4ba48714ef660e295156dcb5b87673e818b09a84878b29193b9cd40789c",
    "cross_cats_sorted": [
      "physics.flu-dyn"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.PS",
    "submitted_at": "2019-07-22T23:27:50Z",
    "title_canon_sha256": "731079f3da91d7348fcb71edd4a8a548eed3ead1ba893419e7918abf0605c8c6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.09629",
    "kind": "arxiv",
    "version": 1
  }
}