Pith Number

pith:XSYP6YSK

pith:2022:XSYP6YSKOSECET7ATJXJYA4C5S

not attested not anchored not stored refs pending

Discovery of Year-Scale Time Variability from Thermal X-ray Emission in Tycho's Supernova Remnant

Hiroya Yamaguchi, Hiroyuki Uchida, Masamune Matsuda, Takaaki Tanaka, Takeshi Go Tsuru

arxiv:2209.12150 v2 · 2022-09-25 · 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{XSYP6YSKOSECET7ATJXJYA4C5S}

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	2026-07-05T05:19:19.136586Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bcb0ff624a7488224fe09a6e9c0382ec979ae3a93e0ef30768b30a61c4ed770f

Aliases

arxiv: 2209.12150 · arxiv_version: 2209.12150v2 · doi: 10.48550/arxiv.2209.12150 · pith_short_12: XSYP6YSKOSEC · pith_short_16: XSYP6YSKOSECET7A · pith_short_8: XSYP6YSK

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/XSYP6YSKOSECET7ATJXJYA4C5S \
  | 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: bcb0ff624a7488224fe09a6e9c0382ec979ae3a93e0ef30768b30a61c4ed770f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "637d7e723a5bf1db6a297dd1626ad931c8df791165afb1f838fc0e4c60c8c3d5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2022-09-25T05:20:45Z",
    "title_canon_sha256": "1367e6832db9ae34e55c0df5727e58ca4db5fdee619a87c5d245e0b86f862d22"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2209.12150",
    "kind": "arxiv",
    "version": 2
  }
}