Pith Number

pith:HDSV5QIP

pith:2020:HDSV5QIPLVF6OFNX6OKMWOND4O

not attested not anchored not stored refs pending

Social hierarchy promotes the cooperation prevalence

Guozhong Zheng, Jiqiang Zhang, Li Chen, Rizhou Liang

arxiv:2009.01018 v2 · 2020-08-30 · physics.soc-ph · nlin.AO · 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{HDSV5QIPLVF6OFNX6OKMWOND4O}

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	2026-07-05T02:11:04.756207Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

38e55ec10f5d4be715b7f394cb39a3e38e4fbec53fa15a84f831c7e145d7efbc

Aliases

arxiv: 2009.01018 · arxiv_version: 2009.01018v2 · doi: 10.48550/arxiv.2009.01018 · pith_short_12: HDSV5QIPLVF6 · pith_short_16: HDSV5QIPLVF6OFNX · pith_short_8: HDSV5QIP

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/HDSV5QIPLVF6OFNX6OKMWOND4O \
  | 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: 38e55ec10f5d4be715b7f394cb39a3e38e4fbec53fa15a84f831c7e145d7efbc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7e7ab68e5ea7a3fbacb8aad374ebb3ba0f7b5e2e98fe56b7f4c1c6d39278f127",
    "cross_cats_sorted": [
      "nlin.AO",
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2020-08-30T04:06:48Z",
    "title_canon_sha256": "81276e1002010750f79fd5529cb2a7ecdf499ec3a37c915594eaf565f9913128"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.01018",
    "kind": "arxiv",
    "version": 2
  }
}