Pith Number

pith:NLTSCRYY

pith:2015:NLTSCRYYYL5CFMIBWZX6ZPIWOS

not attested not anchored not stored refs pending

Massive Stars: Some open questions and the role of Multi-object spectroscopy

A. Herrero (Instituto de Astrofisica de Canarias, Universidad de La Laguna)

arxiv:1509.07048 v1 · 2015-09-23 · 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{NLTSCRYYYL5CFMIBWZX6ZPIWOS}

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	2026-05-18T01:32:17.083304Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6ae7214718c2fa22b101b66fecbd1674ad22ac9f9a849deb934a8eb999bba725

Aliases

arxiv: 1509.07048 · arxiv_version: 1509.07048v1 · doi: 10.48550/arxiv.1509.07048 · pith_short_12: NLTSCRYYYL5C · pith_short_16: NLTSCRYYYL5CFMIB · pith_short_8: NLTSCRYY

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/NLTSCRYYYL5CFMIBWZX6ZPIWOS \
  | 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: 6ae7214718c2fa22b101b66fecbd1674ad22ac9f9a849deb934a8eb999bba725

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "44f24ce95d3b22acc6ea8b75157e6ced9a5c338cde917b9de5c754d8c3f010d6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-09-23T16:16:56Z",
    "title_canon_sha256": "87b8bc46dee1586ed31253f7818e5d89b595267cbd1123cd5253577ab392f916"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.07048",
    "kind": "arxiv",
    "version": 1
  }
}