Pith Number

pith:7D4V5NBS

pith:2012:7D4V5NBSKVPILMFY3SRD3V7VDP

not attested not anchored not stored refs pending

Adaptive and bounded investment returns promote cooperation in spatial public goods games

Long Wang, Matjaz Perc, Xiaojie Chen, Yonghui Zhou, Yongkui Liu

arxiv:1210.6949 v1 · 2012-10-25 · physics.soc-ph · q-bio.PE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7D4V5NBSKVPILMFY3SRD3V7VDP}

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	2026-05-18T03:42:22.725414Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8f95eb432555e85b0b8dca23dd7f51be2485e7de138860734b26f6e33947fda

Aliases

arxiv: 1210.6949 · arxiv_version: 1210.6949v1 · doi: 10.48550/arxiv.1210.6949 · pith_short_12: 7D4V5NBSKVPI · pith_short_16: 7D4V5NBSKVPILMFY · pith_short_8: 7D4V5NBS

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/7D4V5NBSKVPILMFY3SRD3V7VDP \
  | 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: f8f95eb432555e85b0b8dca23dd7f51be2485e7de138860734b26f6e33947fda

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33114e071f2f2e22086a45e211b6c1a72d90403a80ddbf287c66192eadb1b989",
    "cross_cats_sorted": [
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2012-10-25T19:10:50Z",
    "title_canon_sha256": "964d11385608345939458757cdd95f142e4eab6bc940e6af1f1077876660b5cc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.6949",
    "kind": "arxiv",
    "version": 1
  }
}