Pith Number

pith:IUQ765WE

pith:2015:IUQ765WE5FIUJ4WUDVJCXYIW22

not attested not anchored not stored refs pending

Heterogeneity of link weight and the evolution of cooperation

E. Akiyama, M. Iwata

arxiv:1507.06746 v3 · 2015-07-24 · physics.soc-ph · cs.SI · 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{IUQ765WE5FIUJ4WUDVJCXYIW22}

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	2026-05-18T01:20:45.780718Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4521ff76c4e95144f2d41d522be116d6b9d6e58e27417a6c96eaaf520fcbef1e

Aliases

arxiv: 1507.06746 · arxiv_version: 1507.06746v3 · doi: 10.48550/arxiv.1507.06746 · pith_short_12: IUQ765WE5FIU · pith_short_16: IUQ765WE5FIUJ4WU · pith_short_8: IUQ765WE

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/IUQ765WE5FIUJ4WUDVJCXYIW22 \
  | 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: 4521ff76c4e95144f2d41d522be116d6b9d6e58e27417a6c96eaaf520fcbef1e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cb370d0764e271122db5a0988b56198b0e17c2b24f1c4c371c786566eb16b4ac",
    "cross_cats_sorted": [
      "cs.SI",
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2015-07-24T05:14:40Z",
    "title_canon_sha256": "18f148d15c448dbb5b0fe417b915ea24c2f95c07c05499b2291d3e5df2d4462a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.06746",
    "kind": "arxiv",
    "version": 3
  }
}