Pith Number

pith:RY3TK4EC

pith:2026:RY3TK4ECMXQJ5OLBAMU6Z553AI

not attested not anchored not stored refs pending

A Modified Multi-Level Tracking Scheme for the Detection of Sunspot Umbral Dots

Amit Chaturvedi, Rohan Eugene Louis

arxiv:2605.26564 v1 · 2026-05-26 · 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{RY3TK4ECMXQJ5OLBAMU6Z553AI}

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	2026-05-27T01:05:26.486207Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8e3735708265e09eb9610329ecf7bb022eeb83bd71fd46d05184fbf20455bca8

Aliases

arxiv: 2605.26564 · arxiv_version: 2605.26564v1 · doi: 10.48550/arxiv.2605.26564 · pith_short_12: RY3TK4ECMXQJ · pith_short_16: RY3TK4ECMXQJ5OLB · pith_short_8: RY3TK4EC

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/RY3TK4ECMXQJ5OLBAMU6Z553AI \
  | 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: 8e3735708265e09eb9610329ecf7bb022eeb83bd71fd46d05184fbf20455bca8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0724b3093b460d7fa53913e288b7ef277c58d4505fd8a77270cf7c3bcbafada7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2026-05-26T05:24:51Z",
    "title_canon_sha256": "9429166ffe57b96c6e9bef4a1742bc4cb1f5a438be3e6db94a40f4d74d184789"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.26564",
    "kind": "arxiv",
    "version": 1
  }
}