Pith Number

pith:IGDWXDUD

pith:2020:IGDWXDUDCGCRJB7LU4ZORXDIN7

not attested not anchored not stored refs pending

Optimal extraction of echelle spectra: getting the most from observations

Ansgar Wehrhahn, Nikolai Piskunov, Thomas Marquart

arxiv:2008.05827 v3 · 2020-08-13 · 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{IGDWXDUDCGCRJB7LU4ZORXDIN7}

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.

Cited by

1 paper in Pith

The Stellar Observations Network Group (SONG) -- A Legacy Archive of Stellar Time-Domain Spectroscopy

Receipt and verification

First computed	2026-07-05T02:12:24.227914Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

41876b8e8311851487eba732e8dc686fc73b248de3b22fa113feeac837398b3b

Aliases

arxiv: 2008.05827 · arxiv_version: 2008.05827v3 · doi: 10.48550/arxiv.2008.05827 · pith_short_12: IGDWXDUDCGCR · pith_short_16: IGDWXDUDCGCRJB7L · pith_short_8: IGDWXDUD

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/IGDWXDUDCGCRJB7LU4ZORXDIN7 \
  | 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: 41876b8e8311851487eba732e8dc686fc73b248de3b22fa113feeac837398b3b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c81e30ea40f6b8b72a17c0128b864f175fda2bc1f191e93ca1dfbbc00b1c7761",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2020-08-13T11:31:45Z",
    "title_canon_sha256": "5e42aa0f5cb3d29521e60749bf928380a81ea41e0d6cbd89df88a7cf8ce0d970"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2008.05827",
    "kind": "arxiv",
    "version": 3
  }
}