Pith Number

pith:PQRCG42Y

pith:2021:PQRCG42YXWP4DA23A3RXQGZHTR

not attested not anchored not stored refs pending

CARMENES input catalog of M dwarfs VI. A time-resolved Ca II H&K catalog from archival data

A. Quirrenbach, A. Reiners, A. Schweitzer, C. Cifuentes, D. Montes, D. Revilla, I. Ribas, J. A. Caballero, J. H. M. M. Schmitt, L. Tal-Or, M. Cort\'es-Contreras, M. Mittag, P. J. Amado, S. L. Skrzypinski, S. V. Jeffers, T. Trifonov, V. Perdelwitz, W. Seifert

arxiv:2107.06376 v1 · 2021-07-13 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PQRCG42YXWP4DA23A3RXQGZHTR}

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	2026-07-05T03:08:35.681944Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c22237358bd9fc1835b06e3781b279c6be07d5460fae2c1ebe47fff935f20d7

Aliases

arxiv: 2107.06376 · arxiv_version: 2107.06376v1 · doi: 10.48550/arxiv.2107.06376 · pith_short_12: PQRCG42YXWP4 · pith_short_16: PQRCG42YXWP4DA23 · pith_short_8: PQRCG42Y

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/PQRCG42YXWP4DA23A3RXQGZHTR \
  | 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: 7c22237358bd9fc1835b06e3781b279c6be07d5460fae2c1ebe47fff935f20d7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "228fb6de4ae63966e980ff214a44c7e2521cb991b40c028961c3730941dd9ff0",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2021-07-13T20:27:47Z",
    "title_canon_sha256": "0557691a3526becdd3069583344dd13a0bdc403c8590da7360f55679aae16450"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.06376",
    "kind": "arxiv",
    "version": 1
  }
}