Pith Number

pith:DDK4VBF5

pith:2011:DDK4VBF5HSEQFEZU26ZSHYD4C4

not attested not anchored not stored refs pending

Type-Ia supernova rates and the progenitor problem, a review

Dan Maoz, Filippo Mannucci

arxiv:1111.4492 v2 · 2011-11-18 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DDK4VBF5HSEQFEZU26ZSHYD4C4}

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	2026-05-18T01:59:29.049230Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18d5ca84bd3c89029334d7b323e07c1718d98f57f4a6d2df191aa1aaeabf522e

Aliases

arxiv: 1111.4492 · arxiv_version: 1111.4492v2 · doi: 10.48550/arxiv.1111.4492 · pith_short_12: DDK4VBF5HSEQ · pith_short_16: DDK4VBF5HSEQFEZU · pith_short_8: DDK4VBF5

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/DDK4VBF5HSEQFEZU26ZSHYD4C4 \
  | 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: 18d5ca84bd3c89029334d7b323e07c1718d98f57f4a6d2df191aa1aaeabf522e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "435075927e96f969d90e5cb6178e53d5c9d96e079f38bf968db26e065e5b1e21",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-11-18T21:25:42Z",
    "title_canon_sha256": "8853c2ddee0ccf45a1bc7dd339d6668795fcc825482a9cef5d244a6e820f69c0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.4492",
    "kind": "arxiv",
    "version": 2
  }
}