Pith Number

pith:QHJVUXVJ

pith:2023:QHJVUXVJURWK763BJUSXCIRKTH

not attested not anchored not stored refs pending

Forecasting Large Realized Covariance Matrices: The Benefits of Factor Models and Shrinkage

Diego S. de Brito, Marcelo C. Medeiros, Rafael Alves, Ruy M. Ribeiro

arxiv:2303.16151 v1 · 2023-03-22 · q-fin.ST · cs.LG · econ.EM · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QHJVUXVJURWK763BJUSXCIRKTH}

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	2026-07-05T05:55:32.543310Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81d35a5ea9a46caffb614d2571222a99f1d0e57cf75712b3317ed12972257742

Aliases

arxiv: 2303.16151 · arxiv_version: 2303.16151v1 · doi: 10.48550/arxiv.2303.16151 · pith_short_12: QHJVUXVJURWK · pith_short_16: QHJVUXVJURWK763B · pith_short_8: QHJVUXVJ

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/QHJVUXVJURWK763BJUSXCIRKTH \
  | 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: 81d35a5ea9a46caffb614d2571222a99f1d0e57cf75712b3317ed12972257742

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "893d8cddabf45eccc57cbbb438727853129ae859b0e562e86aee5a02a19c83a5",
    "cross_cats_sorted": [
      "cs.LG",
      "econ.EM",
      "stat.ML"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "q-fin.ST",
    "submitted_at": "2023-03-22T16:38:22Z",
    "title_canon_sha256": "2877eb2fff04d4b5554546829633d74e661b286fe069af100bbd86ab165dd54f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2303.16151",
    "kind": "arxiv",
    "version": 1
  }
}