Pith Number

pith:2EV4XYCJ

pith:2018:2EV4XYCJ4CTD5OJKHB5QGIA5PH

not attested not anchored not stored refs pending

Systematic analysis of agreement between metrics and peer review in the UK REF

Ludo Waltman, Vincent Traag

arxiv:1808.03491 v2 · 2018-08-10 · cs.DL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2EV4XYCJ4CTD5OJKHB5QGIA5PH}

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	2026-05-17T23:50:49.022158Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d12bcbe049e0a63eb92a387b03201d79f06a55bc4e6c90f67943f773281e1c9a

Aliases

arxiv: 1808.03491 · arxiv_version: 1808.03491v2 · doi: 10.48550/arxiv.1808.03491 · pith_short_12: 2EV4XYCJ4CTD · pith_short_16: 2EV4XYCJ4CTD5OJK · pith_short_8: 2EV4XYCJ

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/2EV4XYCJ4CTD5OJKHB5QGIA5PH \
  | 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: d12bcbe049e0a63eb92a387b03201d79f06a55bc4e6c90f67943f773281e1c9a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f953bd9b4d965706a1e994c8d64f82c687c2e612b9743cd4e8288472d99e893f",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.DL",
    "submitted_at": "2018-08-10T11:30:20Z",
    "title_canon_sha256": "ccd3a17b8e37157c0f8841b74cdbb09997b6e077e19060f68fb8272f2fc4652c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.03491",
    "kind": "arxiv",
    "version": 2
  }
}