Pith Number

pith:FNN4JURM

pith:2020:FNN4JURME5BCOWVVHQUSAM2APH

not attested not anchored not stored refs pending

Why did developers migrate Android applications from Java to Kotlin?

Bruno Gois Mateus, Matias Martinez

arxiv:2003.12730 v3 · 2020-03-28 · 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{FNN4JURME5BCOWVVHQUSAM2APH}

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	2026-07-05T03:33:37.347956Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2b5bc4d22c2742275ab53c2920334079dc9aff7ff32a466643541512499adbd7

Aliases

arxiv: 2003.12730 · arxiv_version: 2003.12730v3 · doi: 10.48550/arxiv.2003.12730 · pith_short_12: FNN4JURME5BC · pith_short_16: FNN4JURME5BCOWVV · pith_short_8: FNN4JURM

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/FNN4JURME5BCOWVVHQUSAM2APH \
  | 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: 2b5bc4d22c2742275ab53c2920334079dc9aff7ff32a466643541512499adbd7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4cda8bc278271da59e977fcdf54e46e934ac85eed08c45dd333d3aec0c30ecf2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2020-03-28T06:46:01Z",
    "title_canon_sha256": "32f71e6ffc5fc12737beb016b6155bd9a24a448fd5fba2274a9278fd0b23e322"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.12730",
    "kind": "arxiv",
    "version": 3
  }
}