Pith Number

pith:6MCP75NS

pith:2021:6MCP75NSPLNTQEW4AJG3TKIJW7

not attested not anchored not stored refs pending

A VLT/FLAMES survey for massive binaries in Westerlund 1: VIII. Binary Systems and Orbital Parameters

B.W. Ritchie, F. Najarro, I. Negueruela, J.S. Clark

arxiv:2111.12463 v1 · 2021-11-24 · 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{6MCP75NSPLNTQEW4AJG3TKIJW7}

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	2026-07-05T04:15:50.782905Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f304fff5b27adb3812dc024db9a909b7ff02f15b69dfd67195cd3e25c61e4b66

Aliases

arxiv: 2111.12463 · arxiv_version: 2111.12463v1 · doi: 10.48550/arxiv.2111.12463 · pith_short_12: 6MCP75NSPLNT · pith_short_16: 6MCP75NSPLNTQEW4 · pith_short_8: 6MCP75NS

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/6MCP75NSPLNTQEW4AJG3TKIJW7 \
  | 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: f304fff5b27adb3812dc024db9a909b7ff02f15b69dfd67195cd3e25c61e4b66

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "daafe28f76c6ed2013021f4128672293117f87a2e66608f90d19b089ab8db8c2",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2021-11-24T12:36:54Z",
    "title_canon_sha256": "8b9a2dbbfdc952e22134012e98e3b095e2b554d676b17ae163ab4a9741ccf2f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.12463",
    "kind": "arxiv",
    "version": 1
  }
}