Pith Number

pith:7BSPY347

pith:2015:7BSPY347PXUXF45EZUQTITZUPL

not attested not anchored not stored refs pending

How superfluid vortex knots untie

Dustin Kleckner, Louis H. Kauffman, William T. M. Irvine

arxiv:1507.07579 v1 · 2015-07-27 · physics.flu-dyn

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7BSPY347PXUXF45EZUQTITZUPL}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:10:54.164977Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f864fc6f9f7de972f3a4cd21344f347adabe818913451c9876b5a52fabb3c3bd

Aliases

arxiv: 1507.07579 · arxiv_version: 1507.07579v1 · doi: 10.48550/arxiv.1507.07579 · pith_short_12: 7BSPY347PXUX · pith_short_16: 7BSPY347PXUXF45E · pith_short_8: 7BSPY347

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/7BSPY347PXUXF45EZUQTITZUPL \
  | 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: f864fc6f9f7de972f3a4cd21344f347adabe818913451c9876b5a52fabb3c3bd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6eba50be81645d92dc165bd5356f13f71359f5c83fef504a48ba64d2473db623",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2015-07-27T20:26:33Z",
    "title_canon_sha256": "5e3314f697b6be9cf41fef09c927845e10b4feb899d1ad4ede2e3d51281a9b77"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.07579",
    "kind": "arxiv",
    "version": 1
  }
}