Pith Number

pith:EPZ7R5FD

pith:2021:EPZ7R5FDZKHQMP6T5NUHDC7WMQ

not attested not anchored not stored refs pending

Covariance matrices for variance-suppressed simulations

Cheng Zhao, Chia-Hsun Chuang, Chun-Hao To, Francisco-Shu Kitaura, Gustavo Yepes, Joseph DeRose, Marcos Pellejero-Ibanez, Risa H. Wechsler, Sergio Rodr\'iguez-Torres, Shadab Alam, Tony Zhang, Yu Feng

arxiv:2112.10845 v2 · 2021-12-20 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EPZ7R5FDZKHQMP6T5NUHDC7WMQ}

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	2026-07-05T05:52:17.975381Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23f3f8f4a3ca8f063fd3eb68718bf664240a42fd5094286a30ce3ad62088cd70

Aliases

arxiv: 2112.10845 · arxiv_version: 2112.10845v2 · doi: 10.48550/arxiv.2112.10845 · pith_short_12: EPZ7R5FDZKHQ · pith_short_16: EPZ7R5FDZKHQMP6T · pith_short_8: EPZ7R5FD

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/EPZ7R5FDZKHQMP6T5NUHDC7WMQ \
  | 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: 23f3f8f4a3ca8f063fd3eb68718bf664240a42fd5094286a30ce3ad62088cd70

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8401c4e34fc64746f04a971bc5ed97db8673fe9d79aeddb0d2767ecf9ae0bb1b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2021-12-20T20:27:37Z",
    "title_canon_sha256": "3f84932a164a594dc1798805f4008881a4f9dcc8f26b84b834c1f6c90ae55f56"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.10845",
    "kind": "arxiv",
    "version": 2
  }
}