Pith Number

pith:2W7DWU5T

pith:2003:2W7DWU5T5RXKAP75CPLTQ7X63A

not attested not anchored not stored refs pending

A covariance kernel for proteins

Jean-Philippe Vert, Marco Cuturi

arxiv:q-bio/0310022 v1 · 2003-10-16 · q-bio.GN

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2W7DWU5T5RXKAP75CPLTQ7X63A}

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	2026-05-18T04:32:01.891232Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d5be3b53b3ec6ea03ffd13d7387efed83984307a5ca19cc2debee71e319bdab5

Aliases

arxiv: q-bio/0310022 · arxiv_version: q-bio/0310022v1 · doi: 10.48550/arxiv.q-bio/0310022 · pith_short_12: 2W7DWU5T5RXK · pith_short_16: 2W7DWU5T5RXKAP75 · pith_short_8: 2W7DWU5T

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/2W7DWU5T5RXKAP75CPLTQ7X63A \
  | 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: d5be3b53b3ec6ea03ffd13d7387efed83984307a5ca19cc2debee71e319bdab5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a5de0d2b783438646a1fc7d7752aa8d487441cc7719f50ebc28c25257eeec19",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "q-bio.GN",
    "submitted_at": "2003-10-16T07:07:13Z",
    "title_canon_sha256": "e2211f9c655750e3da397d8cbbad43c57a1e90ad6648f124ef6e7dbdb8dd899c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "q-bio/0310022",
    "kind": "arxiv",
    "version": 1
  }
}