Pith Number

pith:WPIGPG23

pith:2017:WPIGPG23JXUSYVF3BLZSGLO2XS

not attested not anchored not stored refs pending

Application of data science techniques to disentangle X-ray spectral variation of super-massive black holes

E. Kusunoki (Univ. of Tokyo), K. Ebisawa (JAXA/ISAS), M. Mizumoto, M. Morii (Institute of Statistical Mathematics), S. Ikeda, S. Pike

arxiv:1701.05386 v1 · 2017-01-19 · 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{WPIGPG23JXUSYVF3BLZSGLO2XS}

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	2026-05-18T00:52:22.074867Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b3d0679b5b4de92c54bb0af3232ddabcbb60f20ebb231daf99e317486e365421

Aliases

arxiv: 1701.05386 · arxiv_version: 1701.05386v1 · doi: 10.48550/arxiv.1701.05386 · pith_short_12: WPIGPG23JXUS · pith_short_16: WPIGPG23JXUSYVF3 · pith_short_8: WPIGPG23

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/WPIGPG23JXUSYVF3BLZSGLO2XS \
  | 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: b3d0679b5b4de92c54bb0af3232ddabcbb60f20ebb231daf99e317486e365421

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f85b7e65fd8fd4ff99855f43fdf5647de96c342fc653cf82cee2a1c2f4a699d",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2017-01-19T12:19:34Z",
    "title_canon_sha256": "60199d9572aea897f204e256f12b4477d26e8c05ef4c056e6f83f5e39876a8a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.05386",
    "kind": "arxiv",
    "version": 1
  }
}