Pith Number

pith:EIUFRQUL

pith:2014:EIUFRQULGE25OOHKTA43DFOCKQ

not attested not anchored not stored refs pending

Scaling of phloem structure and optimality of photoassimilate transport in conifer needles

Alexander Schulz, Eleni Katifori, Henrik Ronellenfitsch, Johannes Liesche, Kaare H. Jensen, N. Michele Holbrook

arxiv:1412.1272 v1 · 2014-12-03 · physics.bio-ph · 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{EIUFRQULGE25OOHKTA43DFOCKQ}

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	2026-05-18T01:12:01.910767Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

222858c28b3135d738ea9839b195c2543797ba9e35af91d57091eb4d4feaf408

Aliases

arxiv: 1412.1272 · arxiv_version: 1412.1272v1 · doi: 10.48550/arxiv.1412.1272 · pith_short_12: EIUFRQULGE25 · pith_short_16: EIUFRQULGE25OOHK · pith_short_8: EIUFRQUL

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/EIUFRQULGE25OOHKTA43DFOCKQ \
  | 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: 222858c28b3135d738ea9839b195c2543797ba9e35af91d57091eb4d4feaf408

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "166394b313c9d6ce92468ab91209fc76dcd69bac0f6374ae75ec802066afaf48",
    "cross_cats_sorted": [
      "q-bio.TO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.bio-ph",
    "submitted_at": "2014-12-03T11:01:32Z",
    "title_canon_sha256": "f946022e989998883629c4058455637261a4f37033f9e226c334fcacd2e4e2ef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.1272",
    "kind": "arxiv",
    "version": 1
  }
}