Pith Number

pith:LZWTSXSU

pith:2015:LZWTSXSUNG4PDIP5LKTID52TKP

not attested not anchored not stored refs pending

Efficient Computation by Three Counter Machines

Holger Petersen

arxiv:1501.02212 v1 · 2015-01-09 · 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{LZWTSXSUNG4PDIP5LKTID52TKP}

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	2026-05-18T02:29:44.635117Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5e6d395e5469b8f1a1fd5aa681f75353e092785889ec82c153fba4137455e3ea

Aliases

arxiv: 1501.02212 · arxiv_version: 1501.02212v1 · doi: 10.48550/arxiv.1501.02212 · pith_short_12: LZWTSXSUNG4P · pith_short_16: LZWTSXSUNG4PDIP5 · pith_short_8: LZWTSXSU

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/LZWTSXSUNG4PDIP5LKTID52TKP \
  | 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: 5e6d395e5469b8f1a1fd5aa681f75353e092785889ec82c153fba4137455e3ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1dbaa1236dadf1609cdd1cbd6a5de66f543146bf3d8f714ab3fbf4b54a93cfd3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2015-01-09T18:02:01Z",
    "title_canon_sha256": "2e261dba558c0b9273c7940fb9edcf3c2cc51dfdd37f26642cddc922a7d442dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.02212",
    "kind": "arxiv",
    "version": 1
  }
}