Pith Number

pith:OT24Q6EV

pith:2018:OT24Q6EVU74HABDJKV3HCKJOQX

not attested not anchored not stored refs pending

Lambda-calculus and Reversible Automatic Combinators

Alberto Ciaffaglione, Furio Honsell, Ivan Scagnetto, Marina Lenisa

arxiv:1806.06759 v2 · 2018-06-18 · cs.LO · 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{OT24Q6EVU74HABDJKV3HCKJOQX}

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	2026-05-18T00:06:50.609046Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

74f5c87895a7f8700469557671292e85f1603a1ff2beaa95eeea3628b0c96da2

Aliases

arxiv: 1806.06759 · arxiv_version: 1806.06759v2 · doi: 10.48550/arxiv.1806.06759 · pith_short_12: OT24Q6EVU74H · pith_short_16: OT24Q6EVU74HABDJ · pith_short_8: OT24Q6EV

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/OT24Q6EVU74HABDJKV3HCKJOQX \
  | 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: 74f5c87895a7f8700469557671292e85f1603a1ff2beaa95eeea3628b0c96da2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f96a2492f7c8e3803d94630468dfdfabe65a6389ba73b0705c08c29171f6d299",
    "cross_cats_sorted": [
      "cs.FL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2018-06-18T15:14:03Z",
    "title_canon_sha256": "4212c47897428817e32792b170d46b4826d0ca2eb6c1804b4cac2c81cd63f477"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.06759",
    "kind": "arxiv",
    "version": 2
  }
}