Pith Number

pith:SYVLJHOA

pith:2018:SYVLJHOAXLOIAFSEB4YCMOZTTP

not attested not anchored not stored refs pending

From ESPRESSO to the future -- Analysis of QSO spectra with the Astrocook package

Giorgio Calderone, Giuliano Taffoni, Guido Cupani, Stefano Cristiani, Valentina D'Odorico

arxiv:1808.04257 v1 · 2018-08-13 · 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{SYVLJHOAXLOIAFSEB4YCMOZTTP}

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	2026-05-18T00:08:18.475465Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

962ab49dc0badc8016440f30263b339bd2aa3a8c8c89be555b2806c8c1321971

Aliases

arxiv: 1808.04257 · arxiv_version: 1808.04257v1 · doi: 10.48550/arxiv.1808.04257 · pith_short_12: SYVLJHOAXLOI · pith_short_16: SYVLJHOAXLOIAFSE · pith_short_8: SYVLJHOA

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/SYVLJHOAXLOIAFSEB4YCMOZTTP \
  | 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: 962ab49dc0badc8016440f30263b339bd2aa3a8c8c89be555b2806c8c1321971

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "30859d2fba7e922ab8f9308d555a021057c26b708979cfe7bc5968a329fdc735",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-08-13T14:20:59Z",
    "title_canon_sha256": "6d349a1fcf93864e24018706ef1ceb00614acaca504a4a59952db21662084b2b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.04257",
    "kind": "arxiv",
    "version": 1
  }
}