Pith Number

pith:CJJ3XILX

pith:2026:CJJ3XILXTTAXHFM2QN52JJZYUG

not attested not anchored not stored refs pending

No Surviving Companion to the Galactic SN 1181: Evidence for a Double-Degenerate Channel for Type Iax Supernovae

Daichi Hiramatsu, Daichi Tsuna, Kohki Uno, Takatoshi Ko, Tomoya Kinugawa

arxiv:2607.19705 v1 · 2026-07-22 · astro-ph.HE · 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{CJJ3XILXTTAXHFM2QN52JJZYUG}

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	2026-07-23T00:24:04.773711Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1253bba1779cc173959a837ba4a738a1927f7afec2bb1d39ba99be2c731b9352

Aliases

arxiv: 2607.19705 · arxiv_version: 2607.19705v1 · doi: 10.48550/arxiv.2607.19705 · pith_short_12: CJJ3XILXTTAX · pith_short_16: CJJ3XILXTTAXHFM2 · pith_short_8: CJJ3XILX

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/CJJ3XILXTTAXHFM2QN52JJZYUG \
  | 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: 1253bba1779cc173959a837ba4a738a1927f7afec2bb1d39ba99be2c731b9352

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "54ebec2301f5097d252c23ee4d603a07a273c68bf8417eabaf8bc6e70b101850",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2026-07-22T03:12:03Z",
    "title_canon_sha256": "6ce84b52b7b3b744ce68b930ff5944cd6b91d78effeb0fba2392c79bdf18638f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.19705",
    "kind": "arxiv",
    "version": 1
  }
}