Pith Number

pith:5OTKIFXE

pith:2009:5OTKIFXENCKLBX7ZJX5PGGNOBX

not attested not anchored not stored refs pending

On the Algorithmic Nature of the World

Hector Zenil, Jean-Paul Delahaye

arxiv:0906.3554 v3 · 2009-06-19 · cs.CC · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5OTKIFXENCKLBX7ZJX5PGGNOBX}

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	2026-05-18T02:24:55.465335Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eba6a416e46894b0dff94dfaf319ae0dd11ae2ed8d056b5159afa0bd1ee2d027

Aliases

arxiv: 0906.3554 · arxiv_version: 0906.3554v3 · doi: 10.48550/arxiv.0906.3554 · pith_short_12: 5OTKIFXENCKL · pith_short_16: 5OTKIFXENCKLBX7Z · pith_short_8: 5OTKIFXE

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/5OTKIFXENCKLBX7ZJX5PGGNOBX \
  | 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: eba6a416e46894b0dff94dfaf319ae0dd11ae2ed8d056b5159afa0bd1ee2d027

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8d29a5584c361ea5d795fe51989d63d4cb167aef4c09387924c023ddb28dd8dd",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2009-06-19T00:08:50Z",
    "title_canon_sha256": "7be4aad0480037f622a5280f6398e42877615f6157c606833db03a97c273b89d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.3554",
    "kind": "arxiv",
    "version": 3
  }
}