Pith Number

pith:X3MERCEE

pith:2018:X3MERCEEEDWRYQSSKL7GTNCHAW

not attested not anchored not stored refs pending

Stellar metallicity variations across spiral arms in disk galaxies with multiple populations

F. Combes, M. Haywood, P. Di Matteo, S. Khoperskov

arxiv:1801.08711 v1 · 2018-01-26 · 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.

Receipt and verification

First computed	2026-05-18T00:20:55.715082Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bed848888420ed1c425252fe69b447059cea08bb67dd201cc3704cd96334a83f

Aliases

arxiv: 1801.08711 · arxiv_version: 1801.08711v1 · doi: 10.48550/arxiv.1801.08711 · pith_short_12: X3MERCEEEDWR · pith_short_16: X3MERCEEEDWRYQSS · pith_short_8: X3MERCEE

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/X3MERCEEEDWRYQSSKL7GTNCHAW \
  | 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: bed848888420ed1c425252fe69b447059cea08bb67dd201cc3704cd96334a83f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "412bb51dd2f7d9bef151f1bd847036e8f35da6dde1b88f5ef96100ff2fa1c551",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-01-26T08:27:00Z",
    "title_canon_sha256": "01ec681029a0fe24e600a4ca5a5b8c7811f0dcf05ed675e9b6b914b11f82ed87"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.08711",
    "kind": "arxiv",
    "version": 1
  }
}