Pith Number

pith:5PIJZQHQ

pith:2018:5PIJZQHQ25RWWOLHCBUQAWKW2N

not attested not anchored not stored refs pending

CalcuList: a Functional Language Extended with Imperative Features

Angelo Furfaro, Domenico Sacca'

arxiv:1802.06651 v1 · 2018-02-19 · 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{5PIJZQHQ25RWWOLHCBUQAWKW2N}

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	2026-05-18T00:23:02.671136Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ebd09cc0f0d7636b39671069005956d350dfcfd3e7f26e766c1b5534b31a709d

Aliases

arxiv: 1802.06651 · arxiv_version: 1802.06651v1 · doi: 10.48550/arxiv.1802.06651 · pith_short_12: 5PIJZQHQ25RW · pith_short_16: 5PIJZQHQ25RWWOLH · pith_short_8: 5PIJZQHQ

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/5PIJZQHQ25RWWOLHCBUQAWKW2N \
  | 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: ebd09cc0f0d7636b39671069005956d350dfcfd3e7f26e766c1b5534b31a709d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "325e11adbdb37abc8e2b2e6ce1b0f48fa4173706710b5d4f1db7d8490b1bd2d4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2018-02-19T14:42:34Z",
    "title_canon_sha256": "04dcab2b321e6d68c8244363bc4a1bd1a9d017b86c48238bb7f8d6b456ca8590"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.06651",
    "kind": "arxiv",
    "version": 1
  }
}