Pith Number

pith:HKHPYGFL

pith:2018:HKHPYGFLNJBNDUT4H2O2MNH2NP

not attested not anchored not stored refs pending

Global survey of star clusters in the Milky Way VI. Age distribution and cluster formation history

A.E. Piskunov, A. Just, N.V. Kharchenko, P. Berczik, R.-D. Scholz, S. Reffert, S.X. Yen

arxiv:1802.06779 v1 · 2018-02-19 · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HKHPYGFLNJBNDUT4H2O2MNH2NP}

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	2026-05-18T00:13:27.701432Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a8efc18ab6a42d1d27c3e9da634fa6bdbdac6667be6c2abf6170df5f504db6b

Aliases

arxiv: 1802.06779 · arxiv_version: 1802.06779v1 · doi: 10.48550/arxiv.1802.06779 · pith_short_12: HKHPYGFLNJBN · pith_short_16: HKHPYGFLNJBNDUT4 · pith_short_8: HKHPYGFL

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/HKHPYGFLNJBNDUT4H2O2MNH2NP \
  | 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: 3a8efc18ab6a42d1d27c3e9da634fa6bdbdac6667be6c2abf6170df5f504db6b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9a50d24b83597ab9e675d1a1eba72e7bac9eae60d5f475cf3704188744345756",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-02-19T08:43:44Z",
    "title_canon_sha256": "dd241ce81cab0504d710d5e4390c9cb1e95a897ce40ea450e317528dd520c2f9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.06779",
    "kind": "arxiv",
    "version": 1
  }
}