Pith Number

pith:AAK3WQIV

pith:2011:AAK3WQIVR7UC4MH546SWIXGCO7

not attested not anchored not stored refs pending

Empirical Encounters with Computational Irreducibility and Unpredictability

Fernando Soler-Toscano, Hector Zenil, Joost J. Joosten

arxiv:1104.3421 v3 · 2011-04-18 · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AAK3WQIVR7UC4MH546SWIXGCO7}

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	2026-05-18T04:19:31.925971Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0015bb41158fe82e30fde7a5645cc277e38fbe4b44303789dff4d9b73e584094

Aliases

arxiv: 1104.3421 · arxiv_version: 1104.3421v3 · doi: 10.48550/arxiv.1104.3421 · pith_short_12: AAK3WQIVR7UC · pith_short_16: AAK3WQIVR7UC4MH5 · pith_short_8: AAK3WQIV

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/AAK3WQIVR7UC4MH546SWIXGCO7 \
  | 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: 0015bb41158fe82e30fde7a5645cc277e38fbe4b44303789dff4d9b73e584094

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2eeb4cd7151ac9e56aba6818fba4087def52cffc7f8ff4d5e402428ad19b88e0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2011-04-18T10:00:45Z",
    "title_canon_sha256": "16375f0825de1d02141ca8dc79bbebeb61ca46d03c24f55a3fd65b0c86250a38"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.3421",
    "kind": "arxiv",
    "version": 3
  }
}