Pith Number

pith:B4NVFP3U

pith:2014:B4NVFP3UEASVT624UJ6EM2Y3QE

not attested not anchored not stored refs pending

Fast inversion of solar Ca II spectra

C. Beck, D. Prasad Choudhary, R.E. Louis, R. Rezaei

arxiv:1410.8451 v2 · 2014-10-30 · 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{B4NVFP3UEASVT624UJ6EM2Y3QE}

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	2026-05-18T01:41:38.495132Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0f1b52bf74202559fb5ca27c466b1b8135dd140780f4dcfeb12dd82dc18740bc

Aliases

arxiv: 1410.8451 · arxiv_version: 1410.8451v2 · doi: 10.48550/arxiv.1410.8451 · pith_short_12: B4NVFP3UEASV · pith_short_16: B4NVFP3UEASVT624 · pith_short_8: B4NVFP3U

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/B4NVFP3UEASVT624UJ6EM2Y3QE \
  | 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: 0f1b52bf74202559fb5ca27c466b1b8135dd140780f4dcfeb12dd82dc18740bc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6fbf6967eeb79c89dea568047c2b16979d6a61ef0daf761ef2b95e54dde32209",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2014-10-30T17:18:45Z",
    "title_canon_sha256": "0c6fd112f6cdac82c5d0c8e0286d20f095432ab36c68205a78c9eb60bb912776"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1410.8451",
    "kind": "arxiv",
    "version": 2
  }
}