Pith Number

pith:4DDPCKAC

pith:2011:4DDPCKACKMI2SFITUTUQEK3YFK

not attested not anchored not stored refs pending

Scaling properties of protein family phylogenies

Carlos M. Duarte, E. Alejandro Herrada, Emilio Hern\'andez-Garc\'ia, V\'ictor M. Egu\'iluz

arxiv:1102.4540 v3 · 2011-02-22 · 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{4DDPCKACKMI2SFITUTUQEK3YFK}

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	2026-05-18T04:17:02.709419Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e0c6f128025311a91513a4e9022b782aa327af0a5c7787ae22049684a9734a98

Aliases

arxiv: 1102.4540 · arxiv_version: 1102.4540v3 · doi: 10.48550/arxiv.1102.4540 · pith_short_12: 4DDPCKACKMI2 · pith_short_16: 4DDPCKACKMI2SFIT · pith_short_8: 4DDPCKAC

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/4DDPCKACKMI2SFITUTUQEK3YFK \
  | 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: e0c6f128025311a91513a4e9022b782aa327af0a5c7787ae22049684a9734a98

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "17be5e33b9b39794c01ebeb1be722a2ba4ddd66ea6ea03f83b34bc14feae4641",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2011-02-22T15:46:08Z",
    "title_canon_sha256": "034b7d8ff5996acfb7f1cc6243970bf76f5b7a638c8bc1ee0f25be44507ec6a8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.4540",
    "kind": "arxiv",
    "version": 3
  }
}