Pith Number

pith:DDUAFQQG

pith:2015:DDUAFQQG7LXXFEVUIBDPGWD7IT

not attested not anchored not stored refs pending

Binary open clusters in the Milky Way: photometric and spectroscopic analysis of NGC 5617 and Trumpler 22

G. Carraro, G.M. De Silva, H. Macpherson, L. Rizzo, S. Martell, V. D'Orazi, V. Efremova

arxiv:1507.03230 v1 · 2015-07-12 · astro-ph.SR · 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{DDUAFQQG7LXXFEVUIBDPGWD7IT}

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	2026-05-18T01:35:07.020567Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18e802c206faef7292b44046f3587f44ea51220107dca8da5b04e88f664d5d95

Aliases

arxiv: 1507.03230 · arxiv_version: 1507.03230v1 · doi: 10.48550/arxiv.1507.03230 · pith_short_12: DDUAFQQG7LXX · pith_short_16: DDUAFQQG7LXXFEVU · pith_short_8: DDUAFQQG

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/DDUAFQQG7LXXFEVUIBDPGWD7IT \
  | 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: 18e802c206faef7292b44046f3587f44ea51220107dca8da5b04e88f664d5d95

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4cb535d5dd91be8e530048391759b63c8fb9e6239945a22824beae09892f3e61",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-07-12T13:23:09Z",
    "title_canon_sha256": "7e4bd8a37d1c9f6b9087ae8cb3dbcae51645a5f0c1c62a856956cfa3c830d591"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.03230",
    "kind": "arxiv",
    "version": 1
  }
}