Pith Number

pith:BAGSO3O6

pith:2002:BAGSO3O6LPZYH5JKX5LOA4XECU

not attested not anchored not stored refs pending

Double degenerates from the supernova Ia progenitor survey (SPY)

C. Karl, D. Reimers, G. Nelemans, N. Christlieb, R. Napiwotzki, T. Lisker, U. Heber

arxiv:astro-ph/0210004 v1 · 2002-09-30 · 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{BAGSO3O6LPZYH5JKX5LOA4XECU}

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	2026-07-04T14:12:16.180068Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

080d276dde5bf383f52abf56e072e4153fd9e1f925b452343932595582d19e63

Aliases

arxiv: astro-ph/0210004 · arxiv_version: astro-ph/0210004v1 · doi: 10.48550/arxiv.astro-ph/0210004 · pith_short_12: BAGSO3O6LPZY · pith_short_16: BAGSO3O6LPZYH5JK · pith_short_8: BAGSO3O6

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/BAGSO3O6LPZYH5JKX5LOA4XECU \
  | 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: 080d276dde5bf383f52abf56e072e4153fd9e1f925b452343932595582d19e63

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c4f35e4579fde13be340e7f8c010a456d4aaf8797914d628e28ac57f9935e7d9",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-09-30T20:30:16Z",
    "title_canon_sha256": "bb5c1e6176f65540a0bdf60c2f990b8bef8ad5b337c5d22840790baf49714043"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0210004",
    "kind": "arxiv",
    "version": 1
  }
}