Pith Number

pith:YDW7TQ6O

pith:2010:YDW7TQ6OA5JVNCOLAJRDWDUN4Z

not attested not anchored not stored refs pending

The outer rings of SN1987A

A. Tziamtzis, P. Groningsson, P. Lundqvist, S. Nasoudi-Shoar

arxiv:1008.3387 v3 · 2010-08-19 · 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{YDW7TQ6OA5JVNCOLAJRDWDUN4Z}

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	2026-05-18T02:05:46.468351Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c0edf9c3ce07535689cb02623b0e8de677076bdd16bc0973e3e57abea5cf4fbc

Aliases

arxiv: 1008.3387 · arxiv_version: 1008.3387v3 · doi: 10.48550/arxiv.1008.3387 · pith_short_12: YDW7TQ6OA5JV · pith_short_16: YDW7TQ6OA5JVNCOL · pith_short_8: YDW7TQ6O

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/YDW7TQ6OA5JVNCOLAJRDWDUN4Z \
  | 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: c0edf9c3ce07535689cb02623b0e8de677076bdd16bc0973e3e57abea5cf4fbc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "56e730143a8d93360e79347360d5b57968ee65eb863030ce0c1583c361f3c90e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2010-08-19T20:00:26Z",
    "title_canon_sha256": "ee6a3a4d7136dc4a305592715bc0a43c5f330d3146c180ce6bed3742c674b28a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1008.3387",
    "kind": "arxiv",
    "version": 3
  }
}