Pith Number

pith:FMH5PHI5

pith:2015:FMH5PHI5S7M2MT44GK6A2OKB5Z

not attested not anchored not stored refs pending

Copyless Cost-Register Automata: Structure, Expressiveness, and Closure Properties

Cristian Riveros, Filip Mazowiecki

arxiv:1504.01709 v2 · 2015-04-07 · 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{FMH5PHI5S7M2MT44GK6A2OKB5Z}

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	2026-05-18T00:17:24.674242Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2b0fd79d1d97d9a64f9c32bc0d3941ee47d3bb7bf6c8cb55d65f17ce5e91aa3a

Aliases

arxiv: 1504.01709 · arxiv_version: 1504.01709v2 · doi: 10.48550/arxiv.1504.01709 · pith_short_12: FMH5PHI5S7M2 · pith_short_16: FMH5PHI5S7M2MT44 · pith_short_8: FMH5PHI5

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/FMH5PHI5S7M2MT44GK6A2OKB5Z \
  | 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: 2b0fd79d1d97d9a64f9c32bc0d3941ee47d3bb7bf6c8cb55d65f17ce5e91aa3a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "80dba4afc6685893bdd23a66044eac1186ce57b8b9c6a2a627cc33f7916dc033",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2015-04-07T19:15:30Z",
    "title_canon_sha256": "fdd05936e70a39d04b9ad25017b734777a97eebe10b26ffd490854326148789b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.01709",
    "kind": "arxiv",
    "version": 2
  }
}