Pith Number

pith:SGD5OVSF

pith:2010:SGD5OVSFECVFDTQAWBF5HLGPLL

not attested not anchored not stored refs pending

Annealing a Magnetic Cactus into Phyllotaxis

Cristiano Nisoli, J. D. Maynard, Nathaniel M. Gabor, Paul E. Lammert, Vincent H. Crespi

arxiv:1002.0622 v1 · 2010-02-03 · cond-mat.soft · 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{SGD5OVSFECVFDTQAWBF5HLGPLL}

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	2026-05-18T02:09:20.620507Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9187d7564520aa51ce00b04bd3accf5afb867e1df6e7bf1b92677accaae737d4

Aliases

arxiv: 1002.0622 · arxiv_version: 1002.0622v1 · doi: 10.48550/arxiv.1002.0622 · pith_short_12: SGD5OVSFECVF · pith_short_16: SGD5OVSFECVFDTQA · pith_short_8: SGD5OVSF

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/SGD5OVSFECVFDTQAWBF5HLGPLL \
  | 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: 9187d7564520aa51ce00b04bd3accf5afb867e1df6e7bf1b92677accaae737d4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "58a86c758bf686bbcace65e83e07083ae2827269d86921188065c6620ec307b6",
    "cross_cats_sorted": [
      "physics.bio-ph",
      "q-bio.TO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.soft",
    "submitted_at": "2010-02-03T01:44:37Z",
    "title_canon_sha256": "24ef3aa31c2b9c2a8a5686822ec8383ca8f48ef8c8f71b2f4a9fa520f5822bee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.0622",
    "kind": "arxiv",
    "version": 1
  }
}