Pith Number

pith:FXU46UGU

pith:2019:FXU46UGUF5WDDJL2RWGROGX2G3

not attested not anchored not stored refs pending

Fast Solar Image Classification Using Deep Learning and its Importance for Automation in Solar Physics

John A. Armstrong, Lyndsay Fletcher

arxiv:1905.13575 v1 · 2019-05-31 · astro-ph.SR · astro-ph.IM · cs.CV · eess.IV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FXU46UGUF5WDDJL2RWGROGX2G3}

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	2026-05-17T23:41:08.065485Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2de9cf50d42f6c31a57a8d8d171afa36ebc280544e513a0a9c868f5f9b92ac12

Aliases

arxiv: 1905.13575 · arxiv_version: 1905.13575v1 · doi: 10.48550/arxiv.1905.13575 · pith_short_12: FXU46UGUF5WD · pith_short_16: FXU46UGUF5WDDJL2 · pith_short_8: FXU46UGU

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/FXU46UGUF5WDDJL2RWGROGX2G3 \
  | 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: 2de9cf50d42f6c31a57a8d8d171afa36ebc280544e513a0a9c868f5f9b92ac12

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0a889e6f2b3688c1153ec5d83a7460ddf86a5a12811bbcd1784aca02154effd2",
    "cross_cats_sorted": [
      "astro-ph.IM",
      "cs.CV",
      "eess.IV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-05-31T12:27:55Z",
    "title_canon_sha256": "33cddcf913f61564f0fc211ef6d605df248754fe2554c6149d3299bdcddf42d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.13575",
    "kind": "arxiv",
    "version": 1
  }
}