Pith Number

pith:TNAK7ANL

pith:2012:TNAK7ANL4SHX7QM2OUXZVND327

not attested not anchored not stored refs pending

Permeability of porous materials determined from the Euler characteristic

Christian Scholz, Clemens Bechinger, Frank Wirner, Gerd E. Schr\"oder-Turk, Jan G\"otz, Klaus Mecke, Ulrich R\"ude

arxiv:1211.6885 v1 · 2012-11-29 · physics.flu-dyn · cond-mat.mtrl-sci · cond-mat.soft

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TNAK7ANL4SHX7QM2OUXZVND327}

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	2026-05-18T03:37:07.787452Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9b40af81abe48f7fc19a752f9ab47bd7f30d75a016129a517754acac3d47a9cf

Aliases

arxiv: 1211.6885 · arxiv_version: 1211.6885v1 · doi: 10.48550/arxiv.1211.6885 · pith_short_12: TNAK7ANL4SHX · pith_short_16: TNAK7ANL4SHX7QM2 · pith_short_8: TNAK7ANL

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/TNAK7ANL4SHX7QM2OUXZVND327 \
  | 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: 9b40af81abe48f7fc19a752f9ab47bd7f30d75a016129a517754acac3d47a9cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b046034f4ae01bc44798027064b8905cd018ec66dffd5a07db5231369956d1f0",
    "cross_cats_sorted": [
      "cond-mat.mtrl-sci",
      "cond-mat.soft"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2012-11-29T11:28:37Z",
    "title_canon_sha256": "297ced8346653ae45f7e66b4c014fd19e4aa70a7474d9265c3cdcbb538d885de"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.6885",
    "kind": "arxiv",
    "version": 1
  }
}