Pith Number

pith:ATYZQZTM

pith:2015:ATYZQZTMW3O4S52J5V7KXYPROU

not attested not anchored not stored refs pending

Evolutionary Fitness in Variable Environments

Anna Melbinger, Massimo Vergassola

arxiv:1505.04471 v1 · 2015-05-17 · 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{ATYZQZTMW3O4S52J5V7KXYPROU}

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	2026-05-18T02:07:25.367537Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

04f198666cb6ddc97749ed7eabe1f175322f9a984564a814343097f47b5bc154

Aliases

arxiv: 1505.04471 · arxiv_version: 1505.04471v1 · doi: 10.48550/arxiv.1505.04471 · pith_short_12: ATYZQZTMW3O4 · pith_short_16: ATYZQZTMW3O4S52J · pith_short_8: ATYZQZTM

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/ATYZQZTMW3O4S52J5V7KXYPROU \
  | 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: 04f198666cb6ddc97749ed7eabe1f175322f9a984564a814343097f47b5bc154

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f5e9939a6cde314e0d5ba656423ab389dc2c549a0aff289c67431de61227f0c8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2015-05-17T22:56:36Z",
    "title_canon_sha256": "c59977158a8449cd3d0d8507ceed52b861fc73733f3141944dd76da5d981572f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.04471",
    "kind": "arxiv",
    "version": 1
  }
}