Pith Number

pith:NZPVACQT

pith:2017:NZPVACQTE6GFJMFUCB34FWQG2M

not attested not anchored not stored refs pending

The quest for blue supergiants: binary merger models for the evolution of the progenitor of SN 1987A

Alexander Heger, Athira Menon

arxiv:1703.04918 v1 · 2017-03-15 · astro-ph.SR · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NZPVACQTE6GFJMFUCB34FWQG2M}

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	2026-05-18T00:35:46.441784Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e5f500a13278c54b0b41077c2da06d3198304d75e09eabe7c479ee7a429b9ce

Aliases

arxiv: 1703.04918 · arxiv_version: 1703.04918v1 · doi: 10.48550/arxiv.1703.04918 · pith_short_12: NZPVACQTE6GF · pith_short_16: NZPVACQTE6GFJMFU · pith_short_8: NZPVACQT

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/NZPVACQTE6GFJMFUCB34FWQG2M \
  | 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: 6e5f500a13278c54b0b41077c2da06d3198304d75e09eabe7c479ee7a429b9ce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cacfb090c632ff49a9cdb59b83e12ee8a5cb383885c03ce2e27934cceff9ebf1",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2017-03-15T04:25:01Z",
    "title_canon_sha256": "4aaf5400a8db4fc93b45f918b2bc3120b5c41ccd0f883c2b2f3f8cd79fdccf42"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.04918",
    "kind": "arxiv",
    "version": 1
  }
}