Pith Number

pith:EPOUFMJJ

pith:2009:EPOUFMJJLHAE2B4A4Y6R7P2KI3

not attested not anchored not stored refs pending

On the correlation between Ca and Halpha solar emission and consequences for stellar activity observations

Nadege Meunier, Xavier Delfosse

arxiv:0905.4037 v1 · 2009-05-25 · 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{EPOUFMJJLHAE2B4A4Y6R7P2KI3}

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	2026-05-18T02:13:37.682387Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23dd42b12959c04d0780e63d1fbf4a46f1fef7bc47c62c9377dadc6ae7d806d5

Aliases

arxiv: 0905.4037 · arxiv_version: 0905.4037v1 · doi: 10.48550/arxiv.0905.4037 · pith_short_12: EPOUFMJJLHAE · pith_short_16: EPOUFMJJLHAE2B4A · pith_short_8: EPOUFMJJ

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/EPOUFMJJLHAE2B4A4Y6R7P2KI3 \
  | 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: 23dd42b12959c04d0780e63d1fbf4a46f1fef7bc47c62c9377dadc6ae7d806d5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e5e07b83360c3b3cc1bca59f42abb1f11cc8efaf7aa633f53c4a6da8cf5382cf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-05-25T15:30:03Z",
    "title_canon_sha256": "156b8165aada77ee3b9771ece8955891326fe4543f53f49ab8df4f912ca289e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.4037",
    "kind": "arxiv",
    "version": 1
  }
}