Pith Number

pith:NVPG2OCZ

pith:2017:NVPG2OCZ2ISZ6LTD2C6H3X7ZX6

not attested not anchored not stored refs pending

Hierarchical formation of Westerlund 1: a collapsing cluster with no primordial mass segregation?

Mario Gennaro, Richard J. Allison, Richard J. Parker, Simon P. Goodwin, Wolfgang Brandner

arxiv:1708.04161 v1 · 2017-08-14 · 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{NVPG2OCZ2ISZ6LTD2C6H3X7ZX6}

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	2026-05-18T00:34:46.534718Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d5e6d3859d2259f2e63d0bc7ddff9bf92056daa81b5ce6a83a595f56fbd7981

Aliases

arxiv: 1708.04161 · arxiv_version: 1708.04161v1 · doi: 10.48550/arxiv.1708.04161 · pith_short_12: NVPG2OCZ2ISZ · pith_short_16: NVPG2OCZ2ISZ6LTD · pith_short_8: NVPG2OCZ

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/NVPG2OCZ2ISZ6LTD2C6H3X7ZX6 \
  | 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: 6d5e6d3859d2259f2e63d0bc7ddff9bf92056daa81b5ce6a83a595f56fbd7981

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "639b65dd615e29f8152a8c22d5c8d95adc88ca693e909400b1b55a788e46c50a",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-08-14T14:57:00Z",
    "title_canon_sha256": "0819eaee4102c2e709c6d264694d944018e89beb8cc88fda25764cbaca4b797e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.04161",
    "kind": "arxiv",
    "version": 1
  }
}