Pith Number

pith:BTDMHKCE

pith:2019:BTDMHKCEII52E4RD3VI7SNEO6W

not attested not anchored not stored refs pending

KOOLS--IFU: Kyoto Okayama Optical Low-dispersion Spectrograph with Optical-Fiber Integral Field Unit

Eiji Kambe, Fumihide Iwamuro, Hideyuki Izumiura, Hironori Tsutsui, Ikuru Iwata, Kazuya Matsubayashi, Kouji Ohta, Michitoshi Yoshida, Takashi Hattori

arxiv:1905.05430 v1 · 2019-05-14 · astro-ph.IM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BTDMHKCEII52E4RD3VI7SNEO6W}

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	2026-07-05T00:07:07.186269Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0cc6c3a844423ba27223dd51f9348ef5ad00ec6fca18eb549c2699b407d1ef89

Aliases

arxiv: 1905.05430 · arxiv_version: 1905.05430v1 · doi: 10.48550/arxiv.1905.05430 · pith_short_12: BTDMHKCEII52 · pith_short_16: BTDMHKCEII52E4RD · pith_short_8: BTDMHKCE

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/BTDMHKCEII52E4RD3VI7SNEO6W \
  | 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: 0cc6c3a844423ba27223dd51f9348ef5ad00ec6fca18eb549c2699b407d1ef89

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "39a23f636818687e29e442734ef292d5296ff005c753997d9eeb6116c3dd4b67",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-05-14T07:42:11Z",
    "title_canon_sha256": "ed6aee2a74ec4bf26445599723aa092f0af147eb6a8a149c88883da2555b714e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.05430",
    "kind": "arxiv",
    "version": 1
  }
}