Pith Number

pith:IOIMHEXO

pith:2019:IOIMHEXOQX56DOO6OBK56L5OKZ

not attested not anchored not stored refs pending

NullAway: Practical Type-Based Null Safety for Java

Lazaro Clapp, Manu Sridharan, Subarno Banerjee

arxiv:1907.02127 v1 · 2019-07-03 · 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{IOIMHEXOQX56DOO6OBK56L5OKZ}

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	2026-05-17T23:41:29.806763Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4390c392ee85fbe1b9de7055df2fae565c8eb91f448ab14e947e265c286e4a46

Aliases

arxiv: 1907.02127 · arxiv_version: 1907.02127v1 · doi: 10.48550/arxiv.1907.02127 · pith_short_12: IOIMHEXOQX56 · pith_short_16: IOIMHEXOQX56DOO6 · pith_short_8: IOIMHEXO

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/IOIMHEXOQX56DOO6OBK56L5OKZ \
  | 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: 4390c392ee85fbe1b9de7055df2fae565c8eb91f448ab14e947e265c286e4a46

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1dbc8967218a43dfe98817e4a5a7dee7fcb0c0543766ced87395a00c2b3b5267",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2019-07-03T20:46:49Z",
    "title_canon_sha256": "0a93d643a4ed6f151dbaae7eddaa13f1c3f0af4764058191a4f227e2fa4f2cd2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.02127",
    "kind": "arxiv",
    "version": 1
  }
}