Pith Number

pith:KLPNCK47

pith:2011:KLPNCK47XW3KAQISJQDMLOGB7K

not attested not anchored not stored refs pending

Computing with Hereditarily Finite Sequences

Paul Tarau

arxiv:1112.3782 v1 · 2011-12-16 · cs.PL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KLPNCK47XW3KAQISJQDMLOGB7K}

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	2026-05-18T04:06:08.798565Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

52ded12b9fbdb6a041124c06c5b8c1fabe3660a9bc5bd6e507aa9fee81110fb1

Aliases

arxiv: 1112.3782 · arxiv_version: 1112.3782v1 · doi: 10.48550/arxiv.1112.3782 · pith_short_12: KLPNCK47XW3K · pith_short_16: KLPNCK47XW3KAQIS · pith_short_8: KLPNCK47

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/KLPNCK47XW3KAQISJQDMLOGB7K \
  | 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: 52ded12b9fbdb6a041124c06c5b8c1fabe3660a9bc5bd6e507aa9fee81110fb1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0c94a089a10f88f72e0e4b36c5bc97f25472b545daa1699a5603429850a9ea2e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2011-12-16T12:24:21Z",
    "title_canon_sha256": "769f6e0bd6199b0aa4a556bf7af2ebbe66b286c1350b122bd5f5fceeb0107016"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.3782",
    "kind": "arxiv",
    "version": 1
  }
}