Pith Number

pith:2OK6AXMS

pith:2017:2OK6AXMSKWEUKYBJPRMOZGJX7X

not attested not anchored not stored refs pending

Two-way Two-tape Automata

L\'eo Exibard, Olivier Carton, Olivier Serre

arxiv:1710.00213 v1 · 2017-09-30 · 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{2OK6AXMSKWEUKYBJPRMOZGJX7X}

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	2026-05-18T00:33:55.526064Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d395e05d9255894560297c58ec9937fde2827e4c1f2a6f594f7b22040d6537ab

Aliases

arxiv: 1710.00213 · arxiv_version: 1710.00213v1 · doi: 10.48550/arxiv.1710.00213 · pith_short_12: 2OK6AXMSKWEU · pith_short_16: 2OK6AXMSKWEUKYBJ · pith_short_8: 2OK6AXMS

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/2OK6AXMSKWEUKYBJPRMOZGJX7X \
  | 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: d395e05d9255894560297c58ec9937fde2827e4c1f2a6f594f7b22040d6537ab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2cfa5b0f9079e581885f285e18b25f229497585507552cdd59038c1c69905f0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2017-09-30T15:10:52Z",
    "title_canon_sha256": "505bc44f48eae849f4fe240d587d29bd2568b5aeae046c20fabe0677fa8a1bb3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.00213",
    "kind": "arxiv",
    "version": 1
  }
}