Pith Number

pith:NSSL6XQP

pith:2013:NSSL6XQPDMXXBI2TB4DH7BSEGT

not attested not anchored not stored refs pending

Geographical Variation in Project Cost Performance: The Netherlands versus Worldwide

Bent Flyvbjerg, Chantal C. Cantarelli, S{\o}ren L. Buhl

arxiv:1307.2181 v1 · 2013-07-08 · q-fin.GN

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NSSL6XQPDMXXBI2TB4DH7BSEGT}

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	2026-05-18T03:19:02.178199Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6ca4bf5e0f1b2f70a3530f067f864434ee33cc99d36790df18e7678334ff5bf4

Aliases

arxiv: 1307.2181 · arxiv_version: 1307.2181v1 · doi: 10.48550/arxiv.1307.2181 · pith_short_12: NSSL6XQPDMXX · pith_short_16: NSSL6XQPDMXXBI2T · pith_short_8: NSSL6XQP

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/NSSL6XQPDMXXBI2TB4DH7BSEGT \
  | 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: 6ca4bf5e0f1b2f70a3530f067f864434ee33cc99d36790df18e7678334ff5bf4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "94cfd31e75f6559e2e0730181ed239026a082d3dfaa3d167e12564b6399a67a3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-fin.GN",
    "submitted_at": "2013-07-08T17:24:46Z",
    "title_canon_sha256": "664f3998a8c6970dbc79c138aff92d71761b47b7800908df8b5fc2ebeb5d5850"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.2181",
    "kind": "arxiv",
    "version": 1
  }
}