Pith Number

pith:KRYP3PVL

pith:2015:KRYP3PVL3MBNLFJERBMQ734RUT

not attested not anchored not stored refs pending

The cuttlefish Sepia officinalis (Sepiidae, Cephalopoda) constructs cuttlebone from a liquid-crystal precursor

Antonio G. Checa, Francisco Ruiz-Raya, Isabel S\'anchez-Almazo, Jos\'e P. Andrade, Julyan H. E. Cartwright

arxiv:1506.08290 v1 · 2015-06-27 · cond-mat.mtrl-sci · nlin.AO · physics.bio-ph · q-bio.TO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KRYP3PVL3MBNLFJERBMQ734RUT}

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	2026-05-18T01:37:46.860011Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5470fdbeabdb02d5952488590fef91a4d0f9156b8b1e530c66fbc80648e2b6af

Aliases

arxiv: 1506.08290 · arxiv_version: 1506.08290v1 · doi: 10.48550/arxiv.1506.08290 · pith_short_12: KRYP3PVL3MBN · pith_short_16: KRYP3PVL3MBNLFJE · pith_short_8: KRYP3PVL

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/KRYP3PVL3MBNLFJERBMQ734RUT \
  | 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: 5470fdbeabdb02d5952488590fef91a4d0f9156b8b1e530c66fbc80648e2b6af

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "08597efdb3f5c9a92b957f937f0dfa36c4abf9e671baaeaba01454de8a60512e",
    "cross_cats_sorted": [
      "nlin.AO",
      "physics.bio-ph",
      "q-bio.TO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2015-06-27T12:58:46Z",
    "title_canon_sha256": "727df1f458c68d3109390c849db7f274aaee60b58857b9d1ce54f81d62089358"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.08290",
    "kind": "arxiv",
    "version": 1
  }
}