Pith Number

pith:O4I2GGCZ

pith:2026:O4I2GGCZSPNTFTLA72AJY4ZUSC

not attested not anchored not stored refs pending

Stereotyping by strategy standing diversifies cooperation patterns in indirect reciprocity

Feng Fu, Hongwei Zheng, Longzhao Liu, Ming Wei, Shaoting Tang, Wenqiang Zhu, Xin Wang

arxiv:2606.05591 v1 · 2026-06-04 · 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{O4I2GGCZSPNTFTLA72AJY4ZUSC}

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	2026-06-05T01:14:55.767269Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7711a3185993db32cd60fe809c733490a9e9220ac4e553d54ad26d9dff2b4ee8

Aliases

arxiv: 2606.05591 · arxiv_version: 2606.05591v1 · doi: 10.48550/arxiv.2606.05591 · pith_short_12: O4I2GGCZSPNT · pith_short_16: O4I2GGCZSPNTFTLA · pith_short_8: O4I2GGCZ

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/O4I2GGCZSPNTFTLA72AJY4ZUSC \
  | 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: 7711a3185993db32cd60fe809c733490a9e9220ac4e553d54ad26d9dff2b4ee8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d347833a3d9da7b01b78f66ac7fdcfc3ed8ec68de88dc1bac0b5a8ad432f4c35",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2026-06-04T02:12:53Z",
    "title_canon_sha256": "fcb74f674a66aabaa4a169dc29f2b1656f47c63bcaf4874a0eee05968667eb86"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.05591",
    "kind": "arxiv",
    "version": 1
  }
}