Pith Number

pith:72ADNURC

pith:2016:72ADNURCNFQ4KDFTP53LECKV2R

not attested not anchored not stored refs pending

Refinement Reflection (or, how to turn your favorite language into a proof assistant using SMT)

Niki Vazou, Ranjit Jhala

arxiv:1610.04641 v1 · 2016-10-14 · cs.PL · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{72ADNURCNFQ4KDFTP53LECKV2R}

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	2026-05-18T01:02:11.941430Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe8036d2226961c50cb37f76b20955d47a5673123768d55ee42615729f21c075

Aliases

arxiv: 1610.04641 · arxiv_version: 1610.04641v1 · doi: 10.48550/arxiv.1610.04641 · pith_short_12: 72ADNURCNFQ4 · pith_short_16: 72ADNURCNFQ4KDFT · pith_short_8: 72ADNURC

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/72ADNURCNFQ4KDFTP53LECKV2R \
  | 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: fe8036d2226961c50cb37f76b20955d47a5673123768d55ee42615729f21c075

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "64eb57bd5583f2f8a7b37cf5f4c1f8e86e619b364fd0119f9662de64ed115af8",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2016-10-14T21:04:26Z",
    "title_canon_sha256": "dbaac325339274cb2cf0527c535bb7009ee0d3aa2240360b7b2c2ee79b7fd282"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1610.04641",
    "kind": "arxiv",
    "version": 1
  }
}