Pith Number

pith:DY5GF5DU

pith:2019:DY5GF5DUDPQOC267YK4PE5GGFU

not attested not anchored not stored refs pending

Variable Stars in M13. III. The Cepheid Variables and their Relation to Evolutionary Changes in Metal-poor BL Her Stars

Barton J. Pritzl, Charles Kuehn, Grzegorz Kopacki, Horace A. Smith, Mary Anderson, Wayne Osborn

arxiv:1904.03689 v1 · 2019-04-07 · astro-ph.SR

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

Receipt and verification

First computed	2026-05-17T23:39:54.308226Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1e3a62f4741be0e16bdfc2b8f274c62d163d9d8b2e838d911406ce6aaed41148

Aliases

arxiv: 1904.03689 · arxiv_version: 1904.03689v1 · doi: 10.48550/arxiv.1904.03689

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/DY5GF5DUDPQOC267YK4PE5GGFU \
  | 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: 1e3a62f4741be0e16bdfc2b8f274c62d163d9d8b2e838d911406ce6aaed41148

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb28ed4ec9f66b9e36de7cca9d5418d1b7c0577780f72a5b61825cfddcdc326e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-04-07T17:04:33Z",
    "title_canon_sha256": "03a01132d119dd32868fa2bed9dd0062e5d73fe4b7e2df5dcf2f1c934bfaa1bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.03689",
    "kind": "arxiv",
    "version": 1
  }
}