Pith Number

pith:BFLZ5WOT

pith:2023:BFLZ5WOTV5AF3ONEW4PQP42KUP

not attested not anchored not stored refs pending

Efficient automatic design of robots

Andrew Spielberg, Daniela Rus, David Matthews, Josh Bongard, Sam Kriegman

arxiv:2306.03263 v2 · 2023-06-05 · cs.RO · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BFLZ5WOTV5AF3ONEW4PQP42KUP}

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	2026-07-05T07:18:27.421788Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

09579ed9d3af405db9a4b71f07f34aa3ffc687ec4663e4e3e3d3b012d2dbfc22

Aliases

arxiv: 2306.03263 · arxiv_version: 2306.03263v2 · doi: 10.48550/arxiv.2306.03263 · pith_short_12: BFLZ5WOTV5AF · pith_short_16: BFLZ5WOTV5AF3ONE · pith_short_8: BFLZ5WOT

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/BFLZ5WOTV5AF3ONEW4PQP42KUP \
  | 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: 09579ed9d3af405db9a4b71f07f34aa3ffc687ec4663e4e3e3d3b012d2dbfc22

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3e1b071f4796a6fcdffc8b5eecf0e723d319da6ff3d7b550f300cf6c20521f5a",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.RO",
    "submitted_at": "2023-06-05T21:30:52Z",
    "title_canon_sha256": "e60256e696275b3a3742763a105704ad358a56e0dbc06957b9535376063236cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2306.03263",
    "kind": "arxiv",
    "version": 2
  }
}