Pith Number

pith:I2IK4IJL

pith:2019:I2IK4IJLU7FHDDTTBJMPKOO2NN

not attested not anchored not stored refs pending

Software Development Effort Estimation Using Regression Fuzzy Models

Alain Abran, Ali Bou Nassif, Ali Idri, Mohammad Azzeh

arxiv:1902.03608 v1 · 2019-02-10 · 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{I2IK4IJLU7FHDDTTBJMPKOO2NN}

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	2026-05-17T23:54:20.221395Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4690ae212ba7ca718e730a58f539da6b5d5224d17807590ca88bf42ea2c0f25b

Aliases

arxiv: 1902.03608 · arxiv_version: 1902.03608v1 · doi: 10.48550/arxiv.1902.03608 · pith_short_12: I2IK4IJLU7FH · pith_short_16: I2IK4IJLU7FHDDTT · pith_short_8: I2IK4IJL

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/I2IK4IJLU7FHDDTTBJMPKOO2NN \
  | 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: 4690ae212ba7ca718e730a58f539da6b5d5224d17807590ca88bf42ea2c0f25b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "482bebd99cceba707aabb6425fa43c2f5db9671ce5ce94bc3d91e0e042e3451d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2019-02-10T14:34:35Z",
    "title_canon_sha256": "a1837cb0d05e44dbe019387161806ce3dd7ca8ad4223edf26bd45ee27415b6ca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.03608",
    "kind": "arxiv",
    "version": 1
  }
}