Pith Number

pith:4SGKNDM3

pith:2018:4SGKNDM32W4DAC3X75QX74Z6C6

not attested not anchored not stored refs pending

A VLT/FLAMES survey for massive binaries in Westerlund 1 V. the X-ray selected blue stragglers Wd1-27 and -30a

B. W. Ritchie, C. Gonzalez-Fernandez, F. Najarro, I. Negueruela, J. S. Clark, M. E. Lohr

arxiv:1811.09444 v1 · 2018-11-23 · 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{4SGKNDM32W4DAC3X75QX74Z6C6}

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	2026-05-17T23:51:30.763892Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e48ca68d9bd5b8300b77ff617ff33e179984ca64e9bcc06e3c6529cbb92819e5

Aliases

arxiv: 1811.09444 · arxiv_version: 1811.09444v1 · doi: 10.48550/arxiv.1811.09444 · pith_short_12: 4SGKNDM32W4D · pith_short_16: 4SGKNDM32W4DAC3X · pith_short_8: 4SGKNDM3

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/4SGKNDM32W4DAC3X75QX74Z6C6 \
  | 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: e48ca68d9bd5b8300b77ff617ff33e179984ca64e9bcc06e3c6529cbb92819e5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "34b1711cd6cb56cef80fcef9ba3c48d0b197b07a6e87d263de01783634d037ea",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-11-23T12:11:17Z",
    "title_canon_sha256": "9a90115f4fd7657e99e5c842dbea451977d4a4a4727f916dd57bd530372b56f8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.09444",
    "kind": "arxiv",
    "version": 1
  }
}