Pith Number

pith:7SVGNTUS

pith:2007:7SVGNTUSZZC7IZTCNFMMAE2AGE

not attested not anchored not stored refs pending

Searching for a Companion Star of Tycho's Type Ia Supernova with Optical Spectroscopic Observations

Jin Ozaki, Mamoru Doi, Nobunari Kashikawa, Takashi Hattori, Toshikazu Shigeyama, Yutaka Ihara, Yutaka Komiyama

arxiv:0706.3259 v1 · 2007-06-22 · 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{7SVGNTUSZZC7IZTCNFMMAE2AGE}

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	2026-05-18T02:16:29.938669Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fcaa66ce92ce45f466626958c013403100ade78743e3cb7d1a661c3df915fd52

Aliases

arxiv: 0706.3259 · arxiv_version: 0706.3259v1 · doi: 10.48550/arxiv.0706.3259 · pith_short_12: 7SVGNTUSZZC7 · pith_short_16: 7SVGNTUSZZC7IZTC · pith_short_8: 7SVGNTUS

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/7SVGNTUSZZC7IZTCNFMMAE2AGE \
  | 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: fcaa66ce92ce45f466626958c013403100ade78743e3cb7d1a661c3df915fd52

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1df7a05ea350d369f220f743099b4c1f103b1fadff52f65855d746e7aea0b9fd",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-06-22T03:55:12Z",
    "title_canon_sha256": "53b4b10dd532b85159a313d36bc0389b6b55e9df54eedc094a0622906e6614c0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0706.3259",
    "kind": "arxiv",
    "version": 1
  }
}