Pith Number

pith:WWKJFQMA

pith:2021:WWKJFQMABI5L7CWOKAGAJN4UZL

not attested not anchored not stored refs pending

A modern reconstruction of Carrington's observations (1853-1861)

E.T.H Teague, F. Clette, Laure Lef\`evre, M. Jansen, S. Fay, Shreya Bhattacharya

arxiv:2103.05353 v1 · 2021-03-09 · 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{WWKJFQMABI5L7CWOKAGAJN4UZL}

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	2026-07-05T05:30:54.465059Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b59492c1800a3abf8ace500c04b794cae66102d6e049ef7a1e88dda77ae3b434

Aliases

arxiv: 2103.05353 · arxiv_version: 2103.05353v1 · doi: 10.48550/arxiv.2103.05353 · pith_short_12: WWKJFQMABI5L · pith_short_16: WWKJFQMABI5L7CWO · pith_short_8: WWKJFQMA

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/WWKJFQMABI5L7CWOKAGAJN4UZL \
  | 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: b59492c1800a3abf8ace500c04b794cae66102d6e049ef7a1e88dda77ae3b434

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "efad65e1bf9530a28f0ec53a520c2d759b7296793fcd3a8f759961753a8c8c25",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2021-03-09T11:02:46Z",
    "title_canon_sha256": "369e74306f4ea125972d9bbd5b7cb9ecf33c6e43e536c4c332c21a8e8952b7a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.05353",
    "kind": "arxiv",
    "version": 1
  }
}