Pith Number

pith:QDA524SG

pith:2017:QDA524SGD4QVW72OAZGT77RCMW

not attested not anchored not stored refs pending

Big Universe, Big Data: Machine Learning and Image Analysis for Astronomy

Christian Igel, Fabian Gieseke, Jan Kremer, Kim Steenstrup Pedersen, Kristoffer Stensbo-Smidt

arxiv:1704.04650 v1 · 2017-04-15 · astro-ph.IM · cs.CV · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QDA524SGD4QVW72OAZGT77RCMW}

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	2026-05-18T00:46:18.008013Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80c1dd72461f215b7f4e064d3ffe226582c341701c29dd1d8eb00447ea6d8aad

Aliases

arxiv: 1704.04650 · arxiv_version: 1704.04650v1 · doi: 10.48550/arxiv.1704.04650 · pith_short_12: QDA524SGD4QV · pith_short_16: QDA524SGD4QVW72O · pith_short_8: QDA524SG

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/QDA524SGD4QVW72OAZGT77RCMW \
  | 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: 80c1dd72461f215b7f4e064d3ffe226582c341701c29dd1d8eb00447ea6d8aad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6009a1c8275ae17c5caaf5735a209b0e0df45b29fb61c346fea36192c721104d",
    "cross_cats_sorted": [
      "cs.CV",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2017-04-15T15:32:13Z",
    "title_canon_sha256": "6cbba219c1a9f469c43c7d0bbf7461a11be5e585b9d945023e5bfc8e5cb8ac95"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.04650",
    "kind": "arxiv",
    "version": 1
  }
}