Pith Number

pith:T7BCQOQD

pith:2017:T7BCQOQD4436BKSELS76P2V4NY

not attested not anchored not stored refs pending

WebPlotDigitizer, a polyvalent and free software to extract spectra from old astronomical publications: application to ultraviolet spectropolarimetry

A. Rohatgi, F. Marin, S. Charlot

arxiv:1708.02025 v1 · 2017-08-07 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{T7BCQOQD4436BKSELS76P2V4NY}

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	2026-05-18T00:38:32.510990Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9fc2283a03e737e0aa445cbfe7eabc6e3dc4a29c19cf1657e0dc9c8d4fcaa735

Aliases

arxiv: 1708.02025 · arxiv_version: 1708.02025v1 · doi: 10.48550/arxiv.1708.02025 · pith_short_12: T7BCQOQD4436 · pith_short_16: T7BCQOQD4436BKSE · pith_short_8: T7BCQOQD

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/T7BCQOQD4436BKSELS76P2V4NY \
  | 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: 9fc2283a03e737e0aa445cbfe7eabc6e3dc4a29c19cf1657e0dc9c8d4fcaa735

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "75c748abd7d2ee703db688790333bbdfc86b222aa6145108ce2fd6bd58c671f2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2017-08-07T07:57:19Z",
    "title_canon_sha256": "1567763fab110f9bb1e7c7da2d28d242d86d265e8a7bf0c817502e60a6ce3ed1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.02025",
    "kind": "arxiv",
    "version": 1
  }
}