Pith Number

pith:YPK6YP2E

pith:2013:YPK6YP2E7CQC47QH7OCSI5HRJB

not attested not anchored not stored refs pending

Computational Irreducibility and Computational Analogy

Herve Zwirn

arxiv:1304.5247 v3 · 2013-04-18 · 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{YPK6YP2E7CQC47QH7OCSI5HRJB}

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	2026-05-18T03:10:36.840821Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c3d5ec3f44f8a02e7e07fb852474f14854793f0bd1f2223994c409f5c043d2a6

Aliases

arxiv: 1304.5247 · arxiv_version: 1304.5247v3 · doi: 10.48550/arxiv.1304.5247 · pith_short_12: YPK6YP2E7CQC · pith_short_16: YPK6YP2E7CQC47QH · pith_short_8: YPK6YP2E

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/YPK6YP2E7CQC47QH7OCSI5HRJB \
  | 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: c3d5ec3f44f8a02e7e07fb852474f14854793f0bd1f2223994c409f5c043d2a6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e5fc9a74296b260e826c23945c2ecc818b4fa3554f6ca0c8a24cbb1e2739a3b6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2013-04-18T20:27:26Z",
    "title_canon_sha256": "e07575a8fbf79733e39489eff592cd3f8f440d6f1fa88a8e5b6ff7f23e37373d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.5247",
    "kind": "arxiv",
    "version": 3
  }
}