Pith Number

pith:OZW5HD5H

pith:2015:OZW5HD5HA2IQEHMY73JI4XLRHW

not attested not anchored not stored refs pending

Asymmetries arising from the space-filling nature of vascular networks

David Hunt, Van M. Savage

arxiv:1508.03682 v1 · 2015-08-15 · physics.med-ph · math.OC · q-bio.TO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OZW5HD5HA2IQEHMY73JI4XLRHW}

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	2026-05-18T01:12:30.703139Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

766dd38fa70691021d98fed28e5d713d8ea16f87879fbbc1f6238ad7deaf7b61

Aliases

arxiv: 1508.03682 · arxiv_version: 1508.03682v1 · doi: 10.48550/arxiv.1508.03682 · pith_short_12: OZW5HD5HA2IQ · pith_short_16: OZW5HD5HA2IQEHMY · pith_short_8: OZW5HD5H

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/OZW5HD5HA2IQEHMY73JI4XLRHW \
  | 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: 766dd38fa70691021d98fed28e5d713d8ea16f87879fbbc1f6238ad7deaf7b61

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "646ebf311fe92b672997ef1fa8e00031138a95972e3e5cd92701ce048922454e",
    "cross_cats_sorted": [
      "math.OC",
      "q-bio.TO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2015-08-15T00:31:12Z",
    "title_canon_sha256": "fb9dd9fc623a328bc869fe9b57c7c42cb5e93c9a3d278e71061b1f965181346b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.03682",
    "kind": "arxiv",
    "version": 1
  }
}