Pith Number

pith:5FNW4K5V

pith:2019:5FNW4K5V2DVXP2KIUQEKQEWPAB

not attested not anchored not stored refs pending

X-ray Study of Spatial Structures in Tycho's Supernova Remnant Using Unsupervised Deep Learning

Hiroyoshi Iwasaki, Yasunobu Uchiyama, Yuto Ichinohe

arxiv:1907.09210 v1 · 2019-07-22 · astro-ph.IM · 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{5FNW4K5V2DVXP2KIUQEKQEWPAB}

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	2026-05-17T23:39:53.173279Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e95b6e2bb5d0eb77e948a408a812cf004d691c8638e0b0cb99ce08894f878cd7

Aliases

arxiv: 1907.09210 · arxiv_version: 1907.09210v1 · doi: 10.48550/arxiv.1907.09210 · pith_short_12: 5FNW4K5V2DVX · pith_short_16: 5FNW4K5V2DVXP2KI · pith_short_8: 5FNW4K5V

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/5FNW4K5V2DVXP2KIUQEKQEWPAB \
  | 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: e95b6e2bb5d0eb77e948a408a812cf004d691c8638e0b0cb99ce08894f878cd7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d595d0cfbc295c51b8916c82088d65796ba3f35d4a32b9e421c90b21a670c386",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-07-22T10:05:21Z",
    "title_canon_sha256": "69526149e411250fc5e3a6e6d48eac3b5f835abdc5baba8629869dd09326ddfb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.09210",
    "kind": "arxiv",
    "version": 1
  }
}