Pith Number

pith:HGTMREAR

pith:2013:HGTMREARD2V2Y2R7T7O26XQVR6

not attested not anchored not stored refs pending

The AD775 cosmic event revisited: the Sun is to blame

B. Kromer, F. Ludlow, G. A. Kovaltsov, I.G. Usoskin, J. Beer, L. Wacker, M. Friedrich, S. K. Solanki

arxiv:1302.6897 v2 · 2013-02-27 · 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{HGTMREARD2V2Y2R7T7O26XQVR6}

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	2026-05-18T03:25:14.133805Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

39a6c890111eabac6a3f9fddaf5e158fa581586450bbb1bdbd3784b4799c346b

Aliases

arxiv: 1302.6897 · arxiv_version: 1302.6897v2 · doi: 10.48550/arxiv.1302.6897 · pith_short_12: HGTMREARD2V2 · pith_short_16: HGTMREARD2V2Y2R7 · pith_short_8: HGTMREAR

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/HGTMREARD2V2Y2R7T7O26XQVR6 \
  | 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: 39a6c890111eabac6a3f9fddaf5e158fa581586450bbb1bdbd3784b4799c346b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "84b60511d08ddf30202d9a48f95691b3e7a3c3ba33370ad255d3a40407af712e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-02-27T16:13:01Z",
    "title_canon_sha256": "91bd74a520918afe77d74f2615a8e8886759aad6771c3cfb7e7eb5386d9fa253"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.6897",
    "kind": "arxiv",
    "version": 2
  }
}