Pith Number

pith:BLEJR73C

pith:2026:BLEJR73CHCZDGOUEK2GCRWPH6Y

not attested not anchored not stored refs pending

The Curious Case of Dark Faculae on M Dwarf Stars

Alexander~I.~Shapiro, Krishnamurthy~Sowmya, Nadiia~Kostogryz, Robert~Cameron, Sami~K.~Solanki, Sara~Seager, Tanayveer~Bhatia, Veronika~Witzke, Yvonne~C.~Unruh

arxiv:2606.19854 v1 · 2026-06-18 · 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{BLEJR73CHCZDGOUEK2GCRWPH6Y}

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	2026-06-19T16:12:37.080562Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0ac898ff6238b2333a84568c28d9e7f60308029291ee3c6dd41ab5413828fb32

Aliases

arxiv: 2606.19854 · arxiv_version: 2606.19854v1 · doi: 10.48550/arxiv.2606.19854 · pith_short_12: BLEJR73CHCZD · pith_short_16: BLEJR73CHCZDGOUE · pith_short_8: BLEJR73C

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/BLEJR73CHCZDGOUEK2GCRWPH6Y \
  | 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: 0ac898ff6238b2333a84568c28d9e7f60308029291ee3c6dd41ab5413828fb32

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e1dd4d7b6bac88d40672666e96c8073333f4301688868710933d7955a95ce7e6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2026-06-18T07:01:37Z",
    "title_canon_sha256": "a128fdd734eeb23fc9ee89ceae6ddd8438ef194d9ff30183f606c881f2bda9cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.19854",
    "kind": "arxiv",
    "version": 1
  }
}