Pith Number

pith:XIJSHVLB

pith:2023:XIJSHVLBY753BIUECBJH7BEV7N

not attested not anchored not stored refs pending

Spectrographs and Spectroscopists for the Sandage Test

A. Grazian, C. Martins, E. Vanzella, F. Fontanot, F. Guarneri, G. Calderone, G. Cupani, K. Boutsia, L. Pasquini, M. Porru, S. Cristiani, V. D'Odorico

arxiv:2302.04365 v1 · 2023-02-08 · 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{XIJSHVLBY753BIUECBJH7BEV7N}

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	2026-07-05T05:40:13.018984Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ba1323d561c7fbb0a28410527f8495fb4910b399c195686e59c89fe04f379625

Aliases

arxiv: 2302.04365 · arxiv_version: 2302.04365v1 · doi: 10.48550/arxiv.2302.04365 · pith_short_12: XIJSHVLBY753 · pith_short_16: XIJSHVLBY753BIUE · pith_short_8: XIJSHVLB

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/XIJSHVLBY753BIUECBJH7BEV7N \
  | 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: ba1323d561c7fbb0a28410527f8495fb4910b399c195686e59c89fe04f379625

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b18dbd4821fca61346f88a717449b00e625ec8d07fcbbe8fda9e56799131898b",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2023-02-08T23:10:44Z",
    "title_canon_sha256": "a41faee9eb9bde5310165e9181a1bc14b1bc41eb33e978020b21e0b98cf25dbc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2302.04365",
    "kind": "arxiv",
    "version": 1
  }
}