Pith Number

pith:JZYKK3YT

pith:2014:JZYKK3YTW2KPROHP3XZLZAJZMG

not attested not anchored not stored refs pending

Optimal villi density for maximal oxygen uptake in the human placenta

A.S. Serov, C. Salafia, D.S. Grebenkov, M. Filoche, P. Brownbill

arxiv:1405.4835 v4 · 2014-04-23 · q-bio.QM · 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{JZYKK3YTW2KPROHP3XZLZAJZMG}

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	2026-05-18T02:30:15.595465Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4e70a56f13b694f8b8efddf2bc8139618156fcd88e041ed01d63400ef20de8a3

Aliases

arxiv: 1405.4835 · arxiv_version: 1405.4835v4 · doi: 10.48550/arxiv.1405.4835 · pith_short_12: JZYKK3YTW2KP · pith_short_16: JZYKK3YTW2KPROHP · pith_short_8: JZYKK3YT

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/JZYKK3YTW2KPROHP3XZLZAJZMG \
  | 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: 4e70a56f13b694f8b8efddf2bc8139618156fcd88e041ed01d63400ef20de8a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3a3c33bdcf8d6b8e1ec3fdd999c22617168c660d14568acbe314217705a8bb38",
    "cross_cats_sorted": [
      "q-bio.TO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.QM",
    "submitted_at": "2014-04-23T11:59:13Z",
    "title_canon_sha256": "623e6e4e8dee9eb3ec1dc2d2467ebdfce4ab1ddc0ba6c8eabf01ae5b2fa846f8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.4835",
    "kind": "arxiv",
    "version": 4
  }
}