Pith Number

pith:W7RGESDA

pith:2007:W7RGESDABBVLAEMM3DWX3XSXQ3

not attested not anchored not stored refs pending

The distance and neutral environment of the massive stellar cluster Westerlund 1

R. Kothes, S.M. Dougherty

arxiv:0704.3073 v1 · 2007-04-23 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W7RGESDABBVLAEMM3DWX3XSXQ3}

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	2026-07-04T15:44:16.618405Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7e2624860086ab0118cd8ed7dde5786ef8c01a6cfd32a3dfec2f7486f915ac0

Aliases

arxiv: 0704.3073 · arxiv_version: 0704.3073v1 · doi: 10.48550/arxiv.0704.3073 · pith_short_12: W7RGESDABBVL · pith_short_16: W7RGESDABBVLAEMM · pith_short_8: W7RGESDA

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/W7RGESDABBVLAEMM3DWX3XSXQ3 \
  | 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: b7e2624860086ab0118cd8ed7dde5786ef8c01a6cfd32a3dfec2f7486f915ac0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "232c81a9da711777e3c1ad08eaa1553525630d0a131414811c42d080a8f6c311",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-04-23T23:33:33Z",
    "title_canon_sha256": "af41a684cda7756b7dec335d924fcf3b22507b679708ef64c865a9cc9f461af0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0704.3073",
    "kind": "arxiv",
    "version": 1
  }
}