Pith Number

pith:4YMAOU54

pith:2016:4YMAOU54GMKXWBJFO4FX7F4YQU

not attested not anchored not stored refs pending

Negative Results for Software Effort Estimation

Barry Boehm, George Mathew, Jairus Hihn, Tim Menzies, Ye Yang

arxiv:1609.05563 v3 · 2016-09-18 · 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{4YMAOU54GMKXWBJFO4FX7F4YQU}

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	2026-05-18T01:03:40.381263Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e6180753bc33157b0525770b7f9798850ad61984d87a0b7fcf94dae9910db797

Aliases

arxiv: 1609.05563 · arxiv_version: 1609.05563v3 · doi: 10.48550/arxiv.1609.05563 · pith_short_12: 4YMAOU54GMKX · pith_short_16: 4YMAOU54GMKXWBJF · pith_short_8: 4YMAOU54

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/4YMAOU54GMKXWBJFO4FX7F4YQU \
  | 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: e6180753bc33157b0525770b7f9798850ad61984d87a0b7fcf94dae9910db797

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cbb16d741c8ec3554a44db0702a6796035fa29847fc8276a435ec482a64109e2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2016-09-18T23:03:30Z",
    "title_canon_sha256": "d8a71d610ba2ad2b897c17b60e75439bb76fc48c82968c331affbcb3fd29a979"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.05563",
    "kind": "arxiv",
    "version": 3
  }
}