Pith Number

pith:I2JTJRYB

pith:2018:I2JTJRYBKY4I6H5DTUTG2GTFAS

not attested not anchored not stored refs pending

Multidimensional Data Driven Classification of Emission-line Galaxies

Andreas Zezas, David A. van Dyk, Vasileios Stampoulis, Vinay L. Kashyap

arxiv:1802.01233 v2 · 2018-02-05 · 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{I2JTJRYBKY4I6H5DTUTG2GTFAS}

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	2026-05-17T23:53:44.370033Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

469334c70156388f1fa39d266d1a65048731b97d391223913d120715b589c3f1

Aliases

arxiv: 1802.01233 · arxiv_version: 1802.01233v2 · doi: 10.48550/arxiv.1802.01233 · pith_short_12: I2JTJRYBKY4I · pith_short_16: I2JTJRYBKY4I6H5D · pith_short_8: I2JTJRYB

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/I2JTJRYBKY4I6H5DTUTG2GTFAS \
  | 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: 469334c70156388f1fa39d266d1a65048731b97d391223913d120715b589c3f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cf5df1493cb3149ed7c5d8593247e0d58c705db500919f58e27964416ea9b05a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-02-05T01:56:50Z",
    "title_canon_sha256": "aa1efd6917ebddc713794101c98189bd9c2248ac748ed0b880edbbfa10e911d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.01233",
    "kind": "arxiv",
    "version": 2
  }
}