Pith Number

pith:2BDRQD4H

pith:2018:2BDRQD4HWMPO2RCTNDPEKQXQJT

not attested not anchored not stored refs pending

The NWRA Classification Infrastructure: Description and Extension to the Discriminant Analysis Flare Forecasting System (DAFFS)

Eric L. Wagner, Graham Barnes, K.D. Leka

arxiv:1802.06864 v1 · 2018-02-19 · astro-ph.SR · physics.data-an · physics.space-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2BDRQD4HWMPO2RCTNDPEKQXQJT}

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	2026-05-18T00:22:54.120457Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d047180f87b31eed445368de4542f04cc162fdf49af396c3837e748080c5538a

Aliases

arxiv: 1802.06864 · arxiv_version: 1802.06864v1 · doi: 10.48550/arxiv.1802.06864 · pith_short_12: 2BDRQD4HWMPO · pith_short_16: 2BDRQD4HWMPO2RCT · pith_short_8: 2BDRQD4H

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/2BDRQD4HWMPO2RCTNDPEKQXQJT \
  | 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: d047180f87b31eed445368de4542f04cc162fdf49af396c3837e748080c5538a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "51c6bba0958837fd989a5d9a66715746aaa853f6ac33bac02faf9cba95dbdd52",
    "cross_cats_sorted": [
      "physics.data-an",
      "physics.space-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-02-19T21:34:51Z",
    "title_canon_sha256": "7658bae528cc617ac3617ce524c49faa3120a9977ac62f6ad5121eecbf7b1831"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.06864",
    "kind": "arxiv",
    "version": 1
  }
}