Pith Number

pith:MTDCEEBP

pith:2021:MTDCEEBPT4WNEZE4IQZLPGXWUH

not attested not anchored not stored refs pending

Machine learning synthetic spectra for probabilistic redshift estimation: SYTH-Z

Alex Alarcon, Arindam Fadikar, Jon\'as Chaves-Montero, Katrin Heitmann, Nesar Ramachandra, Salman Habib

arxiv:2111.12118 v1 · 2021-11-23 · astro-ph.CO · 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{MTDCEEBPT4WNEZE4IQZLPGXWUH}

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	2026-07-05T04:37:29.779175Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

64c622102f9f2cd2649c4432b79af6a1e8810e05bd142ccfb9c0fd646b9540a7

Aliases

arxiv: 2111.12118 · arxiv_version: 2111.12118v1 · doi: 10.48550/arxiv.2111.12118 · pith_short_12: MTDCEEBPT4WN · pith_short_16: MTDCEEBPT4WNEZE4 · pith_short_8: MTDCEEBP

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/MTDCEEBPT4WNEZE4IQZLPGXWUH \
  | 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: 64c622102f9f2cd2649c4432b79af6a1e8810e05bd142ccfb9c0fd646b9540a7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ba176f138e37ea6e7d6f1db6e92c0074a0dcfc2abae52c4b9827d698d315b06e",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2021-11-23T19:25:34Z",
    "title_canon_sha256": "cbf376b60edc18c677bb0e7a46a160ad36487e5437f1c21ab8463ae414441d43"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.12118",
    "kind": "arxiv",
    "version": 1
  }
}