Pith Number

pith:7WWKHU5X

pith:2019:7WWKHU5XQTMH5EPJ5JOU35JWGI

not attested not anchored not stored refs pending

The minimum metallicity of globular clusters and its physical origin -- implications for the galaxy mass-metallicity relation and observations of proto-globular clusters at high redshift

J. M. Diederik Kruijssen (Heidelberg)

arxiv:1904.09987 v1 · 2019-04-22 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7WWKHU5XQTMH5EPJ5JOU35JWGI}

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	2026-05-17T23:47:24.736587Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fdaca3d3b784d87e91e9ea5d4df536321a2ba63f365223d31ebaedc32b27a2f4

Aliases

arxiv: 1904.09987 · arxiv_version: 1904.09987v1 · doi: 10.48550/arxiv.1904.09987 · pith_short_12: 7WWKHU5XQTMH · pith_short_16: 7WWKHU5XQTMH5EPJ · pith_short_8: 7WWKHU5X

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/7WWKHU5XQTMH5EPJ5JOU35JWGI \
  | 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: fdaca3d3b784d87e91e9ea5d4df536321a2ba63f365223d31ebaedc32b27a2f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e16bd390d522fe73742c361777ebf27165ad19eeabcdae7f0baebcffbe3ca195",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-04-22T18:00:00Z",
    "title_canon_sha256": "62eb6d4c55dc90e7f96e97938aa87641ec38d15d6d32c11131bd3690876cfcbc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.09987",
    "kind": "arxiv",
    "version": 1
  }
}