Pith Number

pith:ACLCUG6E

pith:2017:ACLCUG6ETIPRCE2IYHYV3HQRDM

not attested not anchored not stored refs pending

PonyGE2: Grammatical Evolution in Python

David Fagan, Erik Hemberg, James McDermott, Michael Fenton, Michael O'Neill, Stefan Forstenlechner

arxiv:1703.08535 v2 · 2017-03-24 · cs.NE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ACLCUG6ETIPRCE2IYHYV3HQRDM}

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	2026-05-18T00:45:31.967579Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

00962a1bc49a1f111348c1f15d9e111b179010117773a211a00a8ecd4c014a14

Aliases

arxiv: 1703.08535 · arxiv_version: 1703.08535v2 · doi: 10.48550/arxiv.1703.08535 · pith_short_12: ACLCUG6ETIPR · pith_short_16: ACLCUG6ETIPRCE2I · pith_short_8: ACLCUG6E

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/ACLCUG6ETIPRCE2IYHYV3HQRDM \
  | 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: 00962a1bc49a1f111348c1f15d9e111b179010117773a211a00a8ecd4c014a14

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "daea5578ff4b3a762d66d591dd909e46f510a867c271330029080f264715798d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NE",
    "submitted_at": "2017-03-24T17:50:28Z",
    "title_canon_sha256": "e46655de5abba45e3f6a27d0eb75c494673214282bc52fa17a89575b2ac89217"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.08535",
    "kind": "arxiv",
    "version": 2
  }
}