Pith Number

pith:ERMF4XAX

pith:1997:ERMF4XAXT4M42EOJGIW5XKT4BJ

not attested not anchored not stored refs pending

An exactly solved model of biological evolution

CH), Stefano Galluccio (Institut de Physique Theorique, Universite' de Fribourg

arxiv:cond-mat/9705020 v1 · 1997-05-02 · cond-mat · q-bio

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ERMF4XAXT4M42EOJGIW5XKT4BJ}

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	2026-05-18T01:07:08.253624Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

24585e5c179f19cd11c9322ddbaa7c0a565c9aa47a79e261f18a8c10e6c26413

Aliases

arxiv: cond-mat/9705020 · arxiv_version: cond-mat/9705020v1 · doi: 10.48550/arxiv.cond-mat/9705020 · pith_short_12: ERMF4XAXT4M4 · pith_short_16: ERMF4XAXT4M42EOJ · pith_short_8: ERMF4XAX

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/ERMF4XAXT4M42EOJGIW5XKT4BJ \
  | 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: 24585e5c179f19cd11c9322ddbaa7c0a565c9aa47a79e261f18a8c10e6c26413

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac42e3dea5c8577e586fc92f6d9163a9061d4432130f455bbc83b2e9628371a3",
    "cross_cats_sorted": [
      "q-bio"
    ],
    "license": "",
    "primary_cat": "cond-mat",
    "submitted_at": "1997-05-02T14:09:56Z",
    "title_canon_sha256": "5e91062bcc2b5efba3dcb55505a256ff87a9d69416411aa193fc0ff6d97645d3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cond-mat/9705020",
    "kind": "arxiv",
    "version": 1
  }
}