Pith Number

pith:DZZD2HCC

pith:2009:DZZD2HCCKCNVYZLPFCPH2CSB3E

not attested not anchored not stored refs pending

Optimality Properties of a Proposed Precursor to the Genetic Code

Nigel Goldenfeld, Thomas Butler

arxiv:0905.2932 v1 · 2009-05-18 · q-bio.OT · q-bio.BM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DZZD2HCCKCNVYZLPFCPH2CSB3E}

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	2026-05-18T03:24:06.339371Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1e723d1c42509b5c656f289e7d0a41d92ff816a1d659cfbb345fca060e26b661

Aliases

arxiv: 0905.2932 · arxiv_version: 0905.2932v1 · doi: 10.48550/arxiv.0905.2932 · pith_short_12: DZZD2HCCKCNV · pith_short_16: DZZD2HCCKCNVYZLP · pith_short_8: DZZD2HCC

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/DZZD2HCCKCNVYZLPFCPH2CSB3E \
  | 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: 1e723d1c42509b5c656f289e7d0a41d92ff816a1d659cfbb345fca060e26b661

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4a1dc0e27e8db0eee32485164743eea7b7828f144bc6f9fbb8ba7e909c0713c5",
    "cross_cats_sorted": [
      "q-bio.BM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.OT",
    "submitted_at": "2009-05-18T16:32:10Z",
    "title_canon_sha256": "63b056fc062fe9c1e4fdffcb57b8fd3f486d215e719c30fa69d1417f0a95f8c4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.2932",
    "kind": "arxiv",
    "version": 1
  }
}