Pith Number

pith:DR3YEL2L

pith:2019:DR3YEL2LZMSACNTAOJQBPK2M4R

not attested not anchored not stored refs pending

Is it Possible to Disregard Obsolete Requirements? - An Initial Experiment on a Potentially New Bias in Software Effort Estimation

Lucas Gren, Michael Unterkalmsteiner, Richard Berntsson Svensson

arxiv:1904.02477 v1 · 2019-04-04 · 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{DR3YEL2LZMSACNTAOJQBPK2M4R}

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	2026-05-17T23:49:23.532390Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c77822f4bcb24013660726017ab4ce4593c79e4f48e690afb1874a455ee062e

Aliases

arxiv: 1904.02477 · arxiv_version: 1904.02477v1 · doi: 10.48550/arxiv.1904.02477 · pith_short_12: DR3YEL2LZMSA · pith_short_16: DR3YEL2LZMSACNTA · pith_short_8: DR3YEL2L

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/DR3YEL2LZMSACNTAOJQBPK2M4R \
  | 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: 1c77822f4bcb24013660726017ab4ce4593c79e4f48e690afb1874a455ee062e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a2a6116cea31b9a6874fed6b4b76969f07e80e3529904a6b1cc9641cf7321578",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2019-04-04T10:58:37Z",
    "title_canon_sha256": "73f15c83a0a863e07cb1d3cc49f8bf5f92b9b6aaed520e9c2c03214ed50b0fa3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.02477",
    "kind": "arxiv",
    "version": 1
  }
}