Pith Number

pith:IRCYMGC7

pith:2018:IRCYMGC72KUIYISRGHQUBJB7OQ

not attested not anchored not stored refs pending

Classifying galaxy spectra at 0.5<z<1 with self-organizing maps

H. Teimoorinia, P. Barmby, S. Rahmani

arxiv:1805.07845 v1 · 2018-05-20 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IRCYMGC72KUIYISRGHQUBJB7OQ}

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	2026-05-17T23:51:21.370707Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

444586185fd2a88c225131e140a43f742f7c302b6729860b434635b4601d295c

Aliases

arxiv: 1805.07845 · arxiv_version: 1805.07845v1 · doi: 10.48550/arxiv.1805.07845 · pith_short_12: IRCYMGC72KUI · pith_short_16: IRCYMGC72KUIYISR · pith_short_8: IRCYMGC7

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/IRCYMGC72KUIYISRGHQUBJB7OQ \
  | 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: 444586185fd2a88c225131e140a43f742f7c302b6729860b434635b4601d295c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "59b9e8690cf94d154519b97165374c0ec69f4bbb1df0e00dffddc5b3bd1101f7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-05-20T23:50:43Z",
    "title_canon_sha256": "4bd71ac708575793d630c00ab6f3754e52902d9212987b8b7854f0923b48ef8b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.07845",
    "kind": "arxiv",
    "version": 1
  }
}