Pith Number

pith:I35W6372

pith:2012:I35W637232ORYV4DVG7KVITJZP

not attested not anchored not stored refs pending

Defensive complexity in antagonistic coevolution

Carl T. Bergstrom, Erick Chastain, Rustom Antia

arxiv:1203.4601 v2 · 2012-03-20 · 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{I35W637232ORYV4DVG7KVITJZP}

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	2026-05-18T02:31:12.376175Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

46fb6f6ffade9d1c5783a9beaaa269cbc9c9143fd2d7fa4e07f3462258afb6ce

Aliases

arxiv: 1203.4601 · arxiv_version: 1203.4601v2 · doi: 10.48550/arxiv.1203.4601 · pith_short_12: I35W637232OR · pith_short_16: I35W637232ORYV4D · pith_short_8: I35W6372

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/I35W637232ORYV4DVG7KVITJZP \
  | 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: 46fb6f6ffade9d1c5783a9beaaa269cbc9c9143fd2d7fa4e07f3462258afb6ce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6f46860f5e4f6cdac1d07c0ef1f95181ab62b1c2871edcfa7babe944cc967d55",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2012-03-20T21:39:31Z",
    "title_canon_sha256": "dc11a57e4e5f20c7e6d7cac6e0e570470ee0f6fdadc6813825ab7288f4bc64f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.4601",
    "kind": "arxiv",
    "version": 2
  }
}