Pith Number

pith:ZR5UXVJ6

pith:2025:ZR5UXVJ6QGL3FDXERXM6B6A36J

not attested not anchored not stored refs pending

The Sunspot Solar Observatory Data Archive: Continuing Operations at the Dunn Solar Telescope

Colin Hancock, Damian J. Christian, David B. Jess, Gordon A. MacDonald, Jamey E. Eriksen, Jason Jackiewicz, Juie Shetye, Michael S. Thompson, Peter H. Keys, R.T. James McAteer, Sara Jeffreys, Sean G. Sellers

arxiv:2505.21794 v1 · 2025-05-27 · 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{ZR5UXVJ6QGL3FDXERXM6B6A36J}

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	2026-07-05T11:11:03.728239Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cc7b4bd53e8197b28ee48dd9e0f81bf260f357dd1dea5442d318a32ae7845351

Aliases

arxiv: 2505.21794 · arxiv_version: 2505.21794v1 · doi: 10.48550/arxiv.2505.21794 · pith_short_12: ZR5UXVJ6QGL3 · pith_short_16: ZR5UXVJ6QGL3FDXE · pith_short_8: ZR5UXVJ6

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/ZR5UXVJ6QGL3FDXERXM6B6A36J \
  | 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: cc7b4bd53e8197b28ee48dd9e0f81bf260f357dd1dea5442d318a32ae7845351

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e5cb3a2a774e7bb003a351c7427f933c7022204cf041b63b48674954bc26ab5f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2025-05-27T21:50:51Z",
    "title_canon_sha256": "42bc358930f02827dd89d0337dcc8934c2daf5ccb5991a68e73276a7539f297b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.21794",
    "kind": "arxiv",
    "version": 1
  }
}