Pith Number

pith:NNIUNPOK

pith:2011:NNIUNPOKRDIVODSETA4Z3AZTXY

not attested not anchored not stored refs pending

Hydraulic tortuosity in arbitrary porous media flow

Artur Duda, Maciej Matyka, Zbigniew Koza

arxiv:1104.1943 v1 · 2011-04-11 · 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{NNIUNPOKRDIVODSETA4Z3AZTXY}

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	2026-05-18T02:02:35.515932Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b5146bdca88d1570e4498399d8333be32b7bfc124f3c688c73c11daf1abce61

Aliases

arxiv: 1104.1943 · arxiv_version: 1104.1943v1 · doi: 10.48550/arxiv.1104.1943 · pith_short_12: NNIUNPOKRDIV · pith_short_16: NNIUNPOKRDIVODSE · pith_short_8: NNIUNPOK

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/NNIUNPOKRDIVODSETA4Z3AZTXY \
  | 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: 6b5146bdca88d1570e4498399d8333be32b7bfc124f3c688c73c11daf1abce61

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "115177d46d8a40c61d66449e15f43315ab772d6c4b0b6e0a54df0be1edf85242",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2011-04-11T13:32:12Z",
    "title_canon_sha256": "6394b727e7f1fa01515a80e558d77486db0ceae0f04fecadf3d55bf518155a0d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.1943",
    "kind": "arxiv",
    "version": 1
  }
}