Pith Number

pith:VJ3YHAH5

pith:2007:VJ3YHAH5QRPTWEZYZYKXVX5UQY

not attested not anchored not stored refs pending

A first-principles model of early evolution: Emergence of gene families, species and preferred protein folds

Boris Shakhnovich, Eugene Shakhnovich, Konstantin Zeldovich, Peiqiu Chen

arxiv:0705.3869 v1 · 2007-05-26 · q-bio.BM · 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{VJ3YHAH5QRPTWEZYZYKXVX5UQY}

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	2026-05-18T02:16:30.681329Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aa778380fd845f3b1338ce157adfb4863b43d89dc06f33719f98f770a90307aa

Aliases

arxiv: 0705.3869 · arxiv_version: 0705.3869v1 · doi: 10.48550/arxiv.0705.3869 · pith_short_12: VJ3YHAH5QRPT · pith_short_16: VJ3YHAH5QRPTWEZY · pith_short_8: VJ3YHAH5

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/VJ3YHAH5QRPTWEZYZYKXVX5UQY \
  | 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: aa778380fd845f3b1338ce157adfb4863b43d89dc06f33719f98f770a90307aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac59864a3adf63c3ee9dd1f496092bddb3e3b95552af619368ec4e309ad801f8",
    "cross_cats_sorted": [
      "q-bio.PE"
    ],
    "license": "",
    "primary_cat": "q-bio.BM",
    "submitted_at": "2007-05-26T02:26:55Z",
    "title_canon_sha256": "139e4f20635cf2f083b0533349fefed0abef9f2cc044f238ef51afe84a08af89"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0705.3869",
    "kind": "arxiv",
    "version": 1
  }
}