Pith Number

pith:Z7DCATP4

pith:2013:Z7DCATP462NYEANKBPM3OGVEGE

not attested not anchored not stored refs pending

Prediction of residue-residue contacts from protein families using similarity kernels and least squares regularization

Massimo Andreatta, Santiago Laplagne, Shuai Cheng Li, Stephen Smale

arxiv:1311.1301 v3 · 2013-11-06 · q-bio.BM · math.NA · q-bio.QM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Z7DCATP462NYEANKBPM3OGVEGE}

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	2026-05-18T02:53:17.430601Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cfc6204dfcf69b8201aa0bd9b71aa43104ff12bba56270cc73b7e6876e4c6223

Aliases

arxiv: 1311.1301 · arxiv_version: 1311.1301v3 · doi: 10.48550/arxiv.1311.1301 · pith_short_12: Z7DCATP462NY · pith_short_16: Z7DCATP462NYEANK · pith_short_8: Z7DCATP4

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/Z7DCATP462NYEANKBPM3OGVEGE \
  | 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: cfc6204dfcf69b8201aa0bd9b71aa43104ff12bba56270cc73b7e6876e4c6223

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3f8c8f371d12854ee638e6ac322c7c0d68e426c067017e68335405ba879cfae6",
    "cross_cats_sorted": [
      "math.NA",
      "q-bio.QM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.BM",
    "submitted_at": "2013-11-06T07:35:48Z",
    "title_canon_sha256": "3e0228f096b0faa14c05c1de86949381d55af51be1605da686c314e40c7abc17"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.1301",
    "kind": "arxiv",
    "version": 3
  }
}