Pith Number

pith:NR2CGA4I

pith:2006:NR2CGA4IW2YG3LEQIRIDGK5NE2

not attested not anchored not stored refs pending

Compression ratios based on the Universal Similarity Metric still yield protein distances far from CATH distances

Francesc Rossell\'o, Jairo Rocha, Joan Segura

arxiv:q-bio/0603007 v2 · 2006-03-06 · q-bio.QM · cs.CE · physics.data-an · q-bio.OT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NR2CGA4IW2YG3LEQIRIDGK5NE2}

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	2026-05-18T04:08:35.171650Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c74230388b6b06dac904450332bad26ad7b0d3d937503ab34884b6a5b62500f

Aliases

arxiv: q-bio/0603007 · arxiv_version: q-bio/0603007v2 · doi: 10.48550/arxiv.q-bio/0603007 · pith_short_12: NR2CGA4IW2YG · pith_short_16: NR2CGA4IW2YG3LEQ · pith_short_8: NR2CGA4I

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/NR2CGA4IW2YG3LEQIRIDGK5NE2 \
  | 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: 6c74230388b6b06dac904450332bad26ad7b0d3d937503ab34884b6a5b62500f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ee2c0fc63d5205fbe67471acf8aa8d0b2d9526e35565e78cd5e63d45dc1cbf2",
    "cross_cats_sorted": [
      "cs.CE",
      "physics.data-an",
      "q-bio.OT"
    ],
    "license": "",
    "primary_cat": "q-bio.QM",
    "submitted_at": "2006-03-06T12:00:41Z",
    "title_canon_sha256": "04bbdee1efcba94ba640d136a4a6b861b217457f0fe87cebad2065cd9cd48ecc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "q-bio/0603007",
    "kind": "arxiv",
    "version": 2
  }
}