Pith Number

pith:FDA4IX2E

pith:2017:FDA4IX2EJCQGL6AK2VOKZTMBNP

not attested not anchored not stored refs pending

The Cultural Evolution of National Constitutions

Chen Fang, Daniel N. Rockmore, David C. Krakauer, Nicholas J. Foti, Tom Ginsburg

arxiv:1711.06899 v1 · 2017-11-18 · cs.SI · cs.CL · physics.soc-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FDA4IX2EJCQGL6AK2VOKZTMBNP}

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	2026-05-18T00:30:10.985678Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28c1c45f4448a065f80ad55caccd816be0cf535888c9701bb2144a99d59c312a

Aliases

arxiv: 1711.06899 · arxiv_version: 1711.06899v1 · doi: 10.48550/arxiv.1711.06899 · pith_short_12: FDA4IX2EJCQG · pith_short_16: FDA4IX2EJCQGL6AK · pith_short_8: FDA4IX2E

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/FDA4IX2EJCQGL6AK2VOKZTMBNP \
  | 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: 28c1c45f4448a065f80ad55caccd816be0cf535888c9701bb2144a99d59c312a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eb26ec457d2095b24398b700f1a7b6fc09b31031284ae8b53b968cab2ba25495",
    "cross_cats_sorted": [
      "cs.CL",
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2017-11-18T17:10:25Z",
    "title_canon_sha256": "04663c88cf93b036948e30c869a15ac6a1e4be9b3349456da9d86f8d391a829d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.06899",
    "kind": "arxiv",
    "version": 1
  }
}