Pith Number

pith:5RKEXTKR

pith:2023:5RKEXTKR3PFZCYUUIDBJMO4LRK

not attested not anchored not stored refs pending

Solar Cycle Observations

Aimee Norton, Ilya Usoskin, Lisa Upton, Rachel Howe

arxiv:2305.19803 v2 · 2023-05-31 · 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{5RKEXTKR3PFZCYUUIDBJMO4LRK}

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	2026-07-05T06:55:04.121480Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec544bcd51dbcb91629440c2963b8b8a877ca36a37c2ac1fb4009f97d690abd9

Aliases

arxiv: 2305.19803 · arxiv_version: 2305.19803v2 · doi: 10.48550/arxiv.2305.19803 · pith_short_12: 5RKEXTKR3PFZ · pith_short_16: 5RKEXTKR3PFZCYUU · pith_short_8: 5RKEXTKR

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/5RKEXTKR3PFZCYUUIDBJMO4LRK \
  | 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: ec544bcd51dbcb91629440c2963b8b8a877ca36a37c2ac1fb4009f97d690abd9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1506d089eb9393b8ed9a8e82997659f62a770efc098818e594f8dbcb1d65ee30",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2023-05-31T12:42:35Z",
    "title_canon_sha256": "90190cdad4447271c0115379884469fb333c1650a0711d6dd481dae0f0621d2f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2305.19803",
    "kind": "arxiv",
    "version": 2
  }
}