Pith Number

pith:TKMZHXM5

pith:2019:TKMZHXM5O6MONJHHQGMFL4XJR5

not attested not anchored not stored refs pending

A Note on Clockability for Ordinal Turing Machines

Merlin Carl

arxiv:1906.10087 v2 · 2019-06-24 · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TKMZHXM5O6MONJHHQGMFL4XJR5}

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	2026-05-17T23:42:18.313802Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9a9993dd9d7798e6a4e7819855f2e98f64e027dd5770ce4e4c316b22d33e9e35

Aliases

arxiv: 1906.10087 · arxiv_version: 1906.10087v2 · doi: 10.48550/arxiv.1906.10087 · pith_short_12: TKMZHXM5O6MO · pith_short_16: TKMZHXM5O6MONJHH · pith_short_8: TKMZHXM5

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/TKMZHXM5O6MONJHHQGMFL4XJR5 \
  | 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: 9a9993dd9d7798e6a4e7819855f2e98f64e027dd5770ce4e4c316b22d33e9e35

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4839ba3da35c215233f7a851d0b803e4dab071106cce6e2910cfb6a93d251508",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2019-06-24T17:08:48Z",
    "title_canon_sha256": "623c2a79042c3d5d971036b531032e7b1ec7a7377c646683996f2d0d46ee8cc3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.10087",
    "kind": "arxiv",
    "version": 2
  }
}