Pith Number

pith:KPU3WXXI

pith:2010:KPU3WXXIQD4HLLFVYTMKDCBQ7K

not attested not anchored not stored refs pending

Direct measurement of the flow field around swimming microorganisms

Idan Tuval, Knut Drescher, Marco Polin, Nicolas Michel, Raymond E. Goldstein

arxiv:1008.2681 v1 · 2010-08-16 · physics.bio-ph · cond-mat.soft · 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{KPU3WXXIQD4HLLFVYTMKDCBQ7K}

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	2026-05-18T04:39:27.570585Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

53e9bb5ee880f875acb5c4d8a18830faa4632ff16bc5ac1025b170ed84e843cb

Aliases

arxiv: 1008.2681 · arxiv_version: 1008.2681v1 · doi: 10.48550/arxiv.1008.2681 · pith_short_12: KPU3WXXIQD4H · pith_short_16: KPU3WXXIQD4HLLFV · pith_short_8: KPU3WXXI

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/KPU3WXXIQD4HLLFVYTMKDCBQ7K \
  | 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: 53e9bb5ee880f875acb5c4d8a18830faa4632ff16bc5ac1025b170ed84e843cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a17c846cb56e66d54bfb84d9274bbd2dc3fdc17465ecf83e20995e8e2066e60",
    "cross_cats_sorted": [
      "cond-mat.soft",
      "physics.flu-dyn"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.bio-ph",
    "submitted_at": "2010-08-16T15:05:28Z",
    "title_canon_sha256": "c0c0cedaa57350e399c6fd256984426a7125f26450cf49aa21b5d87f5bfed701"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1008.2681",
    "kind": "arxiv",
    "version": 1
  }
}