Pith Number

pith:TC5FKH3D

pith:2023:TC5FKH3DDYRTX2JLKUH3AYLRY3

not attested not anchored not stored refs pending

Informed Down-Sampled Lexicase Selection: Identifying productive training cases for efficient problem solving

Alexander Lalejini, Charles Ofria, Dominik Sobania, Franz Rothlauf, Lee Spector, Martin Briesch, Ryan Boldi, Thomas Helmuth

arxiv:2301.01488 v2 · 2023-01-04 · 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{TC5FKH3DDYRTX2JLKUH3AYLRY3}

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	2026-07-05T07:47:54.987760Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

98ba551f631e233be92b550fb06171c6cd7039ec37144a0f5bfc981f4523f95c

Aliases

arxiv: 2301.01488 · arxiv_version: 2301.01488v2 · doi: 10.48550/arxiv.2301.01488 · pith_short_12: TC5FKH3DDYRT · pith_short_16: TC5FKH3DDYRTX2JL · pith_short_8: TC5FKH3D

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/TC5FKH3DDYRTX2JLKUH3AYLRY3 \
  | 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: 98ba551f631e233be92b550fb06171c6cd7039ec37144a0f5bfc981f4523f95c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac2c7b4d8574c0c8c45fb02f2a4e558303e49a7acacb969571a51f1bf8345052",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NE",
    "submitted_at": "2023-01-04T08:47:18Z",
    "title_canon_sha256": "1d13b63e5d3722bcb25ff299626c4ba1dd5628420f2728e3bb413fd485dae4e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2301.01488",
    "kind": "arxiv",
    "version": 2
  }
}