Pith Number

pith:EC73AV3H

pith:2021:EC73AV3HO362X6SJ7WMMA56QY3

not attested not anchored not stored refs pending

Changes in granulation scales over the solar cycle seen with SDO/HMI and Hinode/SOT

J. Ballot, J.M. Malherbe, T. Roudier, Z. Frank

arxiv:2106.03556 v1 · 2021-06-07 · 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{EC73AV3HO362X6SJ7WMMA56QY3}

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	2026-07-05T03:06:29.475299Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20bfb0576776fdabfa49fd98c077d0c6cdc57f890d560986618847797e868a3e

Aliases

arxiv: 2106.03556 · arxiv_version: 2106.03556v1 · doi: 10.48550/arxiv.2106.03556 · pith_short_12: EC73AV3HO362 · pith_short_16: EC73AV3HO362X6SJ · pith_short_8: EC73AV3H

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/EC73AV3HO362X6SJ7WMMA56QY3 \
  | 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: 20bfb0576776fdabfa49fd98c077d0c6cdc57f890d560986618847797e868a3e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9156aa10074c18a5e3296eebf28e69290117201d7dc35c47d4592c56655190bd",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2021-06-07T12:35:36Z",
    "title_canon_sha256": "b15a2dcb3cdfc14ba0972db25656a9a3b019fc8c359a9c739dcfacec74b75bea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2106.03556",
    "kind": "arxiv",
    "version": 1
  }
}