Pith Number

pith:5WY54NKM

pith:2018:5WY54NKMSA4RXHILSBWBV6XWKR

not attested not anchored not stored refs pending

Massive stars in the hinterland of the young cluster, Westerlund 2

A. Herrero, J. E. Drew, M. Mohr-Smith, M. Monguio, N. J. Wright, R. Napiwotzki, T. Kupfer

arxiv:1807.06486 v1 · 2018-07-17 · 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{5WY54NKMSA4RXHILSBWBV6XWKR}

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	2026-05-18T00:09:10.794712Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

edb1de354c90391b9d0b906c1afaf6546027b3d457ebe437d6d25374fbec0d87

Aliases

arxiv: 1807.06486 · arxiv_version: 1807.06486v1 · doi: 10.48550/arxiv.1807.06486 · pith_short_12: 5WY54NKMSA4R · pith_short_16: 5WY54NKMSA4RXHIL · pith_short_8: 5WY54NKM

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/5WY54NKMSA4RXHILSBWBV6XWKR \
  | 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: edb1de354c90391b9d0b906c1afaf6546027b3d457ebe437d6d25374fbec0d87

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a603ffc5bb86d82987ee572fce476859c7b532b5dcd4b3ebc88c662a88a5e5da",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-07-17T15:09:22Z",
    "title_canon_sha256": "1b5d7bcf571560eca93beda9ff4ee286d72ec560523d5763cb7c69dcb259f512"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.06486",
    "kind": "arxiv",
    "version": 1
  }
}