Pith Number

pith:MYXZ7TZ4

pith:2006:MYXZ7TZ4LAM6ZVZWRUJADX33C6

not attested not anchored not stored refs pending

The radio spectra of the compact sources in Arp 220: A mixed population of supernovae and supernova remnants

Carol J. Lonsdale, Colin J. Lonsdale, Hannah Thrall, Harding E. Smith, John E. Conway, Philip J. Diamond, Rodrigo Parra

arxiv:astro-ph/0612248 v1 · 2006-12-11 · 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{MYXZ7TZ4LAM6ZVZWRUJADX33C6}

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	2026-05-18T04:29:14.906476Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

662f9fcf3c5819ecd7368d1201df7b1797baa6d1e426346da28a30a69c071f5c

Aliases

arxiv: astro-ph/0612248 · arxiv_version: astro-ph/0612248v1 · doi: 10.48550/arxiv.astro-ph/0612248 · pith_short_12: MYXZ7TZ4LAM6 · pith_short_16: MYXZ7TZ4LAM6ZVZW · pith_short_8: MYXZ7TZ4

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/MYXZ7TZ4LAM6ZVZWRUJADX33C6 \
  | 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: 662f9fcf3c5819ecd7368d1201df7b1797baa6d1e426346da28a30a69c071f5c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "885b42d9bb4a31dff31687e81a889a441deee3d24aeb31f4fc9c9dbd0c57084f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-12-11T09:10:32Z",
    "title_canon_sha256": "fdfe0019a3a90f8370e8d0815260258b8ef56a876ef0b83f22d6395d12c0d468"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0612248",
    "kind": "arxiv",
    "version": 1
  }
}