Pith Number

pith:PXHMGO4D

pith:2009:PXHMGO4D34KOWVXUH7Z6TISTZM

not attested not anchored not stored refs pending

Evidence for a Black Hole Remnant in the Type IIL Supernova 1979C

A. Loeb, C. Jones, D.J. Patnaude

arxiv:0912.1571 v3 · 2009-12-08 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PXHMGO4D34KOWVXUH7Z6TISTZM}

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	2026-05-18T04:36:18.771440Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7dcec33b83df14eb56f43ff3e9a253cb16cbf15ced0daf0713d3247f80ccb042

Aliases

arxiv: 0912.1571 · arxiv_version: 0912.1571v3 · doi: 10.48550/arxiv.0912.1571 · pith_short_12: PXHMGO4D34KO · pith_short_16: PXHMGO4D34KOWVXU · pith_short_8: PXHMGO4D

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/PXHMGO4D34KOWVXUH7Z6TISTZM \
  | 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: 7dcec33b83df14eb56f43ff3e9a253cb16cbf15ced0daf0713d3247f80ccb042

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2bef7a26026448416fa84587c8209f75a6da2660fbbcf54c71a39035f8dfd002",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-12-08T19:12:08Z",
    "title_canon_sha256": "4ea4eb6a4b7585ce9c55b663bd8047dbe045ca77de50df4e3152b486adb8f7e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.1571",
    "kind": "arxiv",
    "version": 3
  }
}