Pith Number

pith:22R4YPKE

pith:2018:22R4YPKE3EEJ2GKRZWCKTC2YWN

not attested not anchored not stored refs pending

Symbolic Register Automata

Alexandra Silva, Loris D'Antoni, Matteo Sammartino, Tiago Ferreira

arxiv:1811.06968 v2 · 2018-11-16 · 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{22R4YPKE3EEJ2GKRZWCKTC2YWN}

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	2026-05-17T23:45:20.542936Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d6a3cc3d44d9089d1951cd84a98b58b362139bfad65daa6218812166f4d7013e

Aliases

arxiv: 1811.06968 · arxiv_version: 1811.06968v2 · doi: 10.48550/arxiv.1811.06968 · pith_short_12: 22R4YPKE3EEJ · pith_short_16: 22R4YPKE3EEJ2GKR · pith_short_8: 22R4YPKE

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/22R4YPKE3EEJ2GKRZWCKTC2YWN \
  | 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: d6a3cc3d44d9089d1951cd84a98b58b362139bfad65daa6218812166f4d7013e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ecc5cc52063af41814879b7ea6b9ca2f8e932950eda44bbae994ce86ee7e5594",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2018-11-16T18:50:10Z",
    "title_canon_sha256": "19eddfdf164b4d643a28197d01b71c4ffedab2d8b240a9dc7e841bbd89522c41"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.06968",
    "kind": "arxiv",
    "version": 2
  }
}