Pith Number

pith:DU5F4VWR

pith:2019:DU5F4VWRQ36FQMSJTVN73X5VGB

not attested not anchored not stored refs pending

A Prospective New Diagnostic Technique for Distinguishing Eruptive and Non-Eruptive Active Regions

D.H. Mackay, P. Pagano, S.L. Yardley

arxiv:1908.09223 v1 · 2019-08-24 · 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{DU5F4VWRQ36FQMSJTVN73X5VGB}

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	2026-07-05T00:09:03.697835Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1d3a5e56d186fc5832499d5bfddfb53078545ccbb1ea14b800b2aa1ac32eee34

Aliases

arxiv: 1908.09223 · arxiv_version: 1908.09223v1 · doi: 10.48550/arxiv.1908.09223 · pith_short_12: DU5F4VWRQ36F · pith_short_16: DU5F4VWRQ36FQMSJ · pith_short_8: DU5F4VWR

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/DU5F4VWRQ36FQMSJTVN73X5VGB \
  | 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: 1d3a5e56d186fc5832499d5bfddfb53078545ccbb1ea14b800b2aa1ac32eee34

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f06b69e3400b2036e8b5948fe06feb5b2a9fd59d9f37d529d9d9cb73951c3ef5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-08-24T22:26:12Z",
    "title_canon_sha256": "327abf6bb524fa2d33985016574733011cbc144e75713ae8967c0782de968808"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.09223",
    "kind": "arxiv",
    "version": 1
  }
}