Pith Number

pith:Y3ZYHKSN

pith:2016:Y3ZYHKSNBLMK3MQPBIZR32ETZF

not attested not anchored not stored refs pending

Revisiting the Futamura Projections: A Diagrammatic Approach

Brandon M. Williams, Saverio Perugini

arxiv:1611.09906 v3 · 2016-11-29 · cs.PL · cs.SE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Y3ZYHKSNBLMK3MQPBIZR32ETZF}

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	2026-05-18T00:20:32.437250Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6f383aa4d0ad8adb20f0a331de893c96993e9c1af1a7b7198a94121c81ab31c

Aliases

arxiv: 1611.09906 · arxiv_version: 1611.09906v3 · doi: 10.48550/arxiv.1611.09906 · pith_short_12: Y3ZYHKSNBLMK · pith_short_16: Y3ZYHKSNBLMK3MQP · pith_short_8: Y3ZYHKSN

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/Y3ZYHKSNBLMK3MQPBIZR32ETZF \
  | 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: c6f383aa4d0ad8adb20f0a331de893c96993e9c1af1a7b7198a94121c81ab31c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "edd9d97980d31af118e684089895576a02b20902de4f3fb033842214341d6373",
    "cross_cats_sorted": [
      "cs.SE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2016-11-29T21:56:34Z",
    "title_canon_sha256": "aed39365a5880a122bc46ebcf5a0b6abf4c003fda0a48841828e999c0e803ee8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.09906",
    "kind": "arxiv",
    "version": 3
  }
}