Pith Number

pith:ZBQPF7UQ

pith:2008:ZBQPF7UQ67MZP26NBHBJPDWQBU

not attested not anchored not stored refs pending

NGC 2770 - a supernova Ib factory?

Christina C. Thoene, Giorgos Leloudas, Jens Hjorth, Jesper Sollerman, Johan P. U. Fynbo, Michal J. Michalowski, Nick L. J. Cox, Paul M. Vreeswijk

arxiv:0807.0473 v1 · 2008-07-03 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZBQPF7UQ67MZP26NBHBJPDWQBU}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T04:29:33.335728Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c860f2fe90f7d997ebcd09c2978ed00d194a683eba04b028f9dcb90657c40ec5

Aliases

arxiv: 0807.0473 · arxiv_version: 0807.0473v1 · doi: 10.48550/arxiv.0807.0473 · pith_short_12: ZBQPF7UQ67MZ · pith_short_16: ZBQPF7UQ67MZP26N · pith_short_8: ZBQPF7UQ

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/ZBQPF7UQ67MZP26NBHBJPDWQBU \
  | 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: c860f2fe90f7d997ebcd09c2978ed00d194a683eba04b028f9dcb90657c40ec5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d83380aaee2a707ad853d3650d3236f8a508d8216fd923fb110a2ef7021145fb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-07-03T01:46:24Z",
    "title_canon_sha256": "eceae30fe8633a81eeb4f522008bf58bcfb7989875bbff323b68bc07d77ac308"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0807.0473",
    "kind": "arxiv",
    "version": 1
  }
}