Pith Number

pith:FECPZ3ST

pith:2019:FECPZ3STOUFGDHK53JB4CD34SW

not attested not anchored not stored refs pending

Evolvability ES: Scalable and Direct Optimization of Evolvability

Alexander Gajewski, Jeff Clune, Joel Lehman, Kenneth O. Stanley

arxiv:1907.06077 v1 · 2019-07-13 · 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{FECPZ3STOUFGDHK53JB4CD34SW}

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	2026-05-17T23:40:42.477685Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2904fcee53750a619d5dda43c10f7c9588e1fde3f925edc1084dd7be2a7a0fd7

Aliases

arxiv: 1907.06077 · arxiv_version: 1907.06077v1 · doi: 10.48550/arxiv.1907.06077 · pith_short_12: FECPZ3STOUFG · pith_short_16: FECPZ3STOUFGDHK5 · pith_short_8: FECPZ3ST

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/FECPZ3STOUFGDHK53JB4CD34SW \
  | 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: 2904fcee53750a619d5dda43c10f7c9588e1fde3f925edc1084dd7be2a7a0fd7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bdb563b69e4c470e01b4e471c503c54327434647241e45b02e3a6ce079593c5c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NE",
    "submitted_at": "2019-07-13T13:37:29Z",
    "title_canon_sha256": "c82cebb864edc3d718aa1b6454efa1100951b88c4d3ceb92e0eaa00de4271b2f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.06077",
    "kind": "arxiv",
    "version": 1
  }
}