Pith Number

pith:HN4AT6EC

pith:1996:HN4AT6ECWOO4XLZYWY7C4CSPJN

not attested not anchored not stored refs pending

An Invitation to Algorithmic Information Theory

G. J. Chaitin (IBM Research)

arxiv:chao-dyn/9609008 v1 · 1996-09-17 · chao-dyn · nlin.CD

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HN4AT6ECWOO4XLZYWY7C4CSPJN}

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	2026-07-04T15:08:13.851047Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3b7809f882b39dcbaf38b63e2e0a4f4b5fa50ab754e7322fc895a4f82d1cf3e8

Aliases

arxiv: chao-dyn/9609008 · arxiv_version: chao-dyn/9609008v1 · doi: 10.48550/arxiv.chao-dyn/9609008 · pith_short_12: HN4AT6ECWOO4 · pith_short_16: HN4AT6ECWOO4XLZY · pith_short_8: HN4AT6EC

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/HN4AT6ECWOO4XLZYWY7C4CSPJN \
  | 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: 3b7809f882b39dcbaf38b63e2e0a4f4b5fa50ab754e7322fc895a4f82d1cf3e8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3f2e1480ded3e62094429384f3a9c948702256f063fbaafd39cefc7ad7ccc6a9",
    "cross_cats_sorted": [
      "nlin.CD"
    ],
    "license": "",
    "primary_cat": "chao-dyn",
    "submitted_at": "1996-09-17T17:21:43Z",
    "title_canon_sha256": "1c76f405c81828178c2138204d9d4a124f7511a9175d6b6983bb0345d6e37e6e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "chao-dyn/9609008",
    "kind": "arxiv",
    "version": 1
  }
}