Pith Number

pith:2CD7CHRX

pith:2019:2CD7CHRXGTDQVVNE4P6DNBQIIH

not attested not anchored not stored refs pending

A comprehensive study of NGC 2345, a young open cluster with a low metallicity

A. Marco, C. Gonz\'alez-Fern\'andez, H. M. Tabernero, I. Negueruela, J. ALonso-Santiago, N. Castro

arxiv:1909.04967 v1 · 2019-09-11 · 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{2CD7CHRXGTDQVVNE4P6DNBQIIH}

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	2026-07-05T00:17:14.826968Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d087f11e3734c70ad5a4e3fc36860841fd8c9d1d8bc7355329fae4ca076de7ba

Aliases

arxiv: 1909.04967 · arxiv_version: 1909.04967v1 · doi: 10.48550/arxiv.1909.04967 · pith_short_12: 2CD7CHRXGTDQ · pith_short_16: 2CD7CHRXGTDQVVNE · pith_short_8: 2CD7CHRX

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/2CD7CHRXGTDQVVNE4P6DNBQIIH \
  | 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: d087f11e3734c70ad5a4e3fc36860841fd8c9d1d8bc7355329fae4ca076de7ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "84c8bb59e0fda85627a5428f5ba5f501f24959fc2863b59fa6db0eb40c3e619c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-09-11T10:50:48Z",
    "title_canon_sha256": "a0e47a0c33d5ea13e9f3f6e79c7e03a61e1a54cfcf6f42c66cbf13762bee45de"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.04967",
    "kind": "arxiv",
    "version": 1
  }
}