Pith Number

pith:YTU4ZG2W

pith:2018:YTU4ZG2WHKWZBTDRZIOXZFSYA5

not attested not anchored not stored refs pending

Milky Way metallicity gradient from Gaia DR2 F/1O double-mode Cepheids

Alexei Kniazev, Bertrand Lemasle, Eva. K. Grebel, Gergely Hajdu, Giuseppe Bono, Jesper Storm, Laura Inno, M\'arcio Catelan, Patrick Fran\c{c}ois, Ronaldo Da Silva, Valery Kovtyukh

arxiv:1809.07352 v1 · 2018-09-19 · astro-ph.SR · astro-ph.GA

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

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.

Cited by

1 paper in Pith

Diagnosing the Properties and Evolutionary Fates of Black Hole and Wolf-Rayet X-ray Binaries as Potential Gravitational Wave Sources for the LIGO-Virgo-KAGRA Network

Receipt and verification

First computed	2026-05-18T00:01:57.676511Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4e9cc9b563aad90cc71ca1d7c9658077571d9a503c1b4b61ed64359d8dd5e66

Aliases

arxiv: 1809.07352 · arxiv_version: 1809.07352v1 · doi: 10.48550/arxiv.1809.07352 · pith_short_12: YTU4ZG2WHKWZ · pith_short_16: YTU4ZG2WHKWZBTDR · pith_short_8: YTU4ZG2W

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/YTU4ZG2WHKWZBTDRZIOXZFSYA5 \
  | 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: c4e9cc9b563aad90cc71ca1d7c9658077571d9a503c1b4b61ed64359d8dd5e66

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7da70bd4b38930ae898bf68e6e06e3af03d8a97de70e993c33db35f1d256edbf",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-09-19T18:03:00Z",
    "title_canon_sha256": "7bcefb4ee3ab8ea596686570afec772e35946f1270ef4c15f9f6376df4fa30b5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.07352",
    "kind": "arxiv",
    "version": 1
  }
}