Pith Number

pith:TIW5DH46

pith:2017:TIW5DH46OGY3FD4XQD7CWYMXYZ

not attested not anchored not stored refs pending

A Tutorial on Using Dafny to Construct Verified Software

Paqui Lucio

arxiv:1701.04481 v1 · 2017-01-16 · cs.SE · cs.LO · 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{TIW5DH46OGY3FD4XQD7CWYMXYZ}

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	2026-05-18T00:52:43.610296Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9a2dd19f9e71b1b28f9780fe2b6197c66eaf5526b13b21f5c771747be50e0bb7

Aliases

arxiv: 1701.04481 · arxiv_version: 1701.04481v1 · doi: 10.48550/arxiv.1701.04481 · pith_short_12: TIW5DH46OGY3 · pith_short_16: TIW5DH46OGY3FD4X · pith_short_8: TIW5DH46

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/TIW5DH46OGY3FD4XQD7CWYMXYZ \
  | 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: 9a2dd19f9e71b1b28f9780fe2b6197c66eaf5526b13b21f5c771747be50e0bb7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7ceab7d2853f3bcac955fe1d55c1f34e4afdf430018d82611bbd559ff185fba2",
    "cross_cats_sorted": [
      "cs.LO",
      "cs.PL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2017-01-16T22:44:47Z",
    "title_canon_sha256": "eb0f1aae2e3fbf52fa1b0cc7f61394f2bf7960d1231e8a6733341b114186396d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.04481",
    "kind": "arxiv",
    "version": 1
  }
}