Pith Number

pith:7XNZIZZT

pith:2016:7XNZIZZTHRFDZBISZUYNWOFGD3

not attested not anchored not stored refs pending

Chromospheric activity and evolutionary age of the Sun and four solar twins

21029 Hamburg, (2) Departamento de Astronomia, A. Hempelmann (1), Germany, Gojenbergsweg 112, J.H.M.M. Schmitt (1) ((1) Hamburger Sternwarte, J.N. Gonz\'alez-P\'erez (1), K.-P. Schr\"oder (2), Mexico), M. Mittag (1), Universidad de Guanajuato, Universit\"at Hamburg

arxiv:1607.01279 v1 · 2016-07-05 · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7XNZIZZTHRFDZBISZUYNWOFGD3}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:11:29.883186Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fddb9467333c4a3c8512cd30db38a61ef7357d16ff25055146dd77b9a2fbbaee

Aliases

arxiv: 1607.01279 · arxiv_version: 1607.01279v1 · doi: 10.48550/arxiv.1607.01279 · pith_short_12: 7XNZIZZTHRFD · pith_short_16: 7XNZIZZTHRFDZBIS · pith_short_8: 7XNZIZZT

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/7XNZIZZTHRFDZBISZUYNWOFGD3 \
  | 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: fddb9467333c4a3c8512cd30db38a61ef7357d16ff25055146dd77b9a2fbbaee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed74f84662aa609c19642bd68a87fb212965e014c4dda99d94cc480c40885e41",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-07-05T14:48:46Z",
    "title_canon_sha256": "1a25f21bca2406d4def66203ee25de107fd160b303eb0b53365f92af6bc1ee59"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1607.01279",
    "kind": "arxiv",
    "version": 1
  }
}