Pith Number

pith:7GKADE3S

pith:2016:7GKADE3S2LBFOBZQBYEGIQ62SJ

not attested not anchored not stored refs pending

Busy Beaver Machines and the Observant Otter Heuristic (or How to Tame Dreadful Dragons)

James Harland

arxiv:1602.03228 v1 · 2016-02-10 · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7GKADE3S2LBFOBZQBYEGIQ62SJ}

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	2026-05-18T01:21:00.516261Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f994019372d2c25707300e086443da9245ca6f85f8b95cf42b2bd87b733de684

Aliases

arxiv: 1602.03228 · arxiv_version: 1602.03228v1 · doi: 10.48550/arxiv.1602.03228 · pith_short_12: 7GKADE3S2LBF · pith_short_16: 7GKADE3S2LBFOBZQ · pith_short_8: 7GKADE3S

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/7GKADE3S2LBFOBZQBYEGIQ62SJ \
  | 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: f994019372d2c25707300e086443da9245ca6f85f8b95cf42b2bd87b733de684

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e7280d7fccd183a063e0ed813eb53c45686220923d2d7717417301ef5b9c089c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2016-02-10T00:18:19Z",
    "title_canon_sha256": "3086b8811302d195cfdf41a0647d9efab6c905b5cee73285be65d936c39fa685"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.03228",
    "kind": "arxiv",
    "version": 1
  }
}