Pith Number

pith:ZDOPB2KJ

pith:2021:ZDOPB2KJO4PFADEB5T2OAXDPBT

not attested not anchored not stored refs pending

YMCA-1: a new remote star cluster of the Milky Way?

C. Tortora, F. Cusano, G. Clementini, G. Longo, I. Musella, M. Bellazzini, M. Cignoni, M. Dall'Ora, M. Gatto, M. Marconi, M. Spavone, M. Tosi, P. Schipani, V. Ripepi

arxiv:2107.10312 v1 · 2021-07-21 · 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{ZDOPB2KJO4PFADEB5T2OAXDPBT}

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	2026-07-05T02:59:58.966239Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c8dcf0e949771e500c81ecf4e05c6f0cddecbb792a3ba4b8d3a58678b68c797b

Aliases

arxiv: 2107.10312 · arxiv_version: 2107.10312v1 · doi: 10.48550/arxiv.2107.10312 · pith_short_12: ZDOPB2KJO4PF · pith_short_16: ZDOPB2KJO4PFADEB · pith_short_8: ZDOPB2KJ

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/ZDOPB2KJO4PFADEB5T2OAXDPBT \
  | 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: c8dcf0e949771e500c81ecf4e05c6f0cddecbb792a3ba4b8d3a58678b68c797b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "715fafb9b69f4b21c8c67fcc437f6bca6009f7a0e71490afffbe45e9b41c71b2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-07-21T19:13:45Z",
    "title_canon_sha256": "83f97240a8ca66d4e64aa26be833b96b541cfb52b0873584de65e4ab4a55902a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.10312",
    "kind": "arxiv",
    "version": 1
  }
}