Pith Number

pith:YTEOWH7R

pith:2000:YTEOWH7RS3IAJJBZVMORDR3WZZ

not attested not anchored not stored refs pending

Study of FK Comae Berenices. II. Spot evolution from 1994 to 1997

H. Korhonen, I. Tuominen, K.G. Strassmeier, S.V. Berdyugina, T. Hackman

arxiv:astro-ph/0007088 v1 · 2000-07-07 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YTEOWH7RS3IAJJBZVMORDR3WZZ}

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	2026-05-18T01:07:46.585681Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4c8eb1ff196d004a439ab1d11c776ce6e55e2bc4126ff9e7389832a9928eaa6

Aliases

arxiv: astro-ph/0007088 · arxiv_version: astro-ph/0007088v1 · doi: 10.48550/arxiv.astro-ph/0007088 · pith_short_12: YTEOWH7RS3IA · pith_short_16: YTEOWH7RS3IAJJBZ · pith_short_8: YTEOWH7R

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/YTEOWH7RS3IAJJBZVMORDR3WZZ \
  | 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: c4c8eb1ff196d004a439ab1d11c776ce6e55e2bc4126ff9e7389832a9928eaa6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "495300411e68f8e90423bbf2e6c4081f912643377421676a1b1db8ae5ef504a5",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-07-07T11:41:21Z",
    "title_canon_sha256": "3411ec40aee1fbcf1a23cf4768254d3777e2b0eab194932f59ded14e527a0170"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0007088",
    "kind": "arxiv",
    "version": 1
  }
}