Pith Number

pith:RFXE24UQ

pith:2018:RFXE24UQMJHGHICLEOUYHCYNLU

not attested not anchored not stored refs pending

Ca II K spectroheliograms for studies of long-term changes in solar irradiance

Ilaria Ermolli, Natalie A. Krivova, Sami K. Solanki, Theodosios Chatzistergos

arxiv:1805.03928 v1 · 2018-05-10 · 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{RFXE24UQMJHGHICLEOUYHCYNLU}

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	2026-05-17T23:55:20.825065Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

896e4d7290624e63a04b23a9838b0d5d02a6d57839ef58e40c6a769d0259b72a

Aliases

arxiv: 1805.03928 · arxiv_version: 1805.03928v1 · doi: 10.48550/arxiv.1805.03928 · pith_short_12: RFXE24UQMJHG · pith_short_16: RFXE24UQMJHGHICL · pith_short_8: RFXE24UQ

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/RFXE24UQMJHGHICLEOUYHCYNLU \
  | 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: 896e4d7290624e63a04b23a9838b0d5d02a6d57839ef58e40c6a769d0259b72a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "accc44f0f71c0c5adad3e059b38b6880ae424abbb4f81621239dbf8854837ed1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-05-10T11:25:00Z",
    "title_canon_sha256": "90af4ee2398d9aa950014183a6e4818e173a5c86b7d61723d008883fff4176d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.03928",
    "kind": "arxiv",
    "version": 1
  }
}