Pith Number

pith:FNG2K7VC

pith:2012:FNG2K7VCV3KLUXAPZ6XSXKW5Q3

not attested not anchored not stored refs pending

Classification by Boosting Differences in Input Vectors: An application to datasets from Astronomy

A. Drake, A. Mahabal, C Donalek, M. Graham, N. S. Philip, S. Abraham.R. Williams, S.G. Djorgovski

arxiv:1211.3607 v1 · 2012-11-15 · astro-ph.IM · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FNG2K7VCV3KLUXAPZ6XSXKW5Q3}

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	2026-05-18T03:40:39.308110Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2b4da57ea2aed4ba5c0fcfaf2baadd86d7dbd21051c87a323fe6e051e54dd3af

Aliases

arxiv: 1211.3607 · arxiv_version: 1211.3607v1 · doi: 10.48550/arxiv.1211.3607 · pith_short_12: FNG2K7VCV3KL · pith_short_16: FNG2K7VCV3KLUXAP · pith_short_8: FNG2K7VC

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/FNG2K7VCV3KLUXAPZ6XSXKW5Q3 \
  | 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: 2b4da57ea2aed4ba5c0fcfaf2baadd86d7dbd21051c87a323fe6e051e54dd3af

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "869c60e852891c6ad715b05d91cb9c2adeef8294f8d02741e4aab1b49a2b7bd3",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2012-11-15T13:55:02Z",
    "title_canon_sha256": "9b4be857c795d668cdc4030a0ff924c7c847e1d67a9b3395bf18bd7b20ea1901"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.3607",
    "kind": "arxiv",
    "version": 1
  }
}