Pith Number

pith:4QCHDYWQ

pith:2018:4QCHDYWQXMADVQNIPDZLJ2UFQS

not attested not anchored not stored refs pending

Rebutting fake news on full spectral fitting

Roberto Cid Fernandes

arxiv:1807.10423 v1 · 2018-07-27 · 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{4QCHDYWQXMADVQNIPDZLJ2UFQS}

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	2026-05-18T00:08:37.687211Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e40471e2d0bb003ac1a878f2b4ea8584824f107a6f7270bd726adbd4ac2d2efc

Aliases

arxiv: 1807.10423 · arxiv_version: 1807.10423v1 · doi: 10.48550/arxiv.1807.10423 · pith_short_12: 4QCHDYWQXMAD · pith_short_16: 4QCHDYWQXMADVQNI · pith_short_8: 4QCHDYWQ

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/4QCHDYWQXMADVQNIPDZLJ2UFQS \
  | 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: e40471e2d0bb003ac1a878f2b4ea8584824f107a6f7270bd726adbd4ac2d2efc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c9f7c34dbb17bc37418808e4ede9856e7e0b35b5d2e9969e281d33aeb08d181",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-07-27T03:41:23Z",
    "title_canon_sha256": "0fed2fa6c96e42e3924c505ea145db492dba2fb5544b79b5cba48c6e24436485"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.10423",
    "kind": "arxiv",
    "version": 1
  }
}