Pith Number

pith:B3PLSWTH

pith:2019:B3PLSWTHJA2BW4CLOQMOCL5L7D

not attested not anchored not stored refs pending

Deep learning on butterfly phenotypes tests evolution's oldest mathematical model

Blanca Huertas, Jennifer F. Hoyal Cuthill, Nicholas Guttenberg, Robyn Crowther, Sophie Ledger

arxiv:1908.05635 v1 · 2019-08-15 · q-bio.PE · cs.LG · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{B3PLSWTHJA2BW4CLOQMOCL5L7D}

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	2026-07-04T23:56:54.496961Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0edeb95a6748341b704b7418e12fabf8dbb667d3b21c712d46523964575c503e

Aliases

arxiv: 1908.05635 · arxiv_version: 1908.05635v1 · doi: 10.48550/arxiv.1908.05635 · pith_short_12: B3PLSWTHJA2B · pith_short_16: B3PLSWTHJA2BW4CL · pith_short_8: B3PLSWTH

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/B3PLSWTHJA2BW4CLOQMOCL5L7D \
  | 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: 0edeb95a6748341b704b7418e12fabf8dbb667d3b21c712d46523964575c503e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e1e177b5067cf7eea12a4f7e46269c1c28a987cf9f98a1db29d6ed76f23e158f",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2019-08-15T16:55:27Z",
    "title_canon_sha256": "ff615d5cebbd34e49053f83a96b49d6b2a9d160160439fabbbc6929bfa7a7da2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.05635",
    "kind": "arxiv",
    "version": 1
  }
}