Pith Number

pith:SA227XYH

pith:2012:SA227XYHZDJ34A36JB54X7KWEZ

not attested not anchored not stored refs pending

Qualitative interpretation of galaxy spectra

2), 2) ((1) Instituto de Astrofisica de Canarias, (2) Departamento de Astrofisica, (3) Instituto Nacional de Astrofisica, 4), (4) Institute of Astronomy, (5) Departamento de Fisica - CFM - Universidade Federal de Santa Catarina, A. B. Morales-Luis (1, Brazil), Cambridge, E. Terlevich (3), Florianopolis, J. Sanchez Almeida (1, La Laguna, Mexico, Optica y Electronica, Puebla, R. Cid Fernandes (5), R. Terlevich (3, SC, Spain, Tenerife, Tonantzintla, UK, Universidad de La Laguna, University of Cambrige

arxiv:1207.3928 v1 · 2012-07-17 · 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{SA227XYHZDJ34A36JB54X7KWEZ}

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	2026-05-18T01:56:17.573791Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9035afdf07c8d3be037e487bcbfd56267c2ff4e6b7ca3643c6345a24ff0fd701

Aliases

arxiv: 1207.3928 · arxiv_version: 1207.3928v1 · doi: 10.48550/arxiv.1207.3928 · pith_short_12: SA227XYHZDJ3 · pith_short_16: SA227XYHZDJ34A36 · pith_short_8: SA227XYH

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/SA227XYHZDJ34A36JB54X7KWEZ \
  | 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: 9035afdf07c8d3be037e487bcbfd56267c2ff4e6b7ca3643c6345a24ff0fd701

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bab7e1c1ddf9d9e0b76bab01f65e412b635c39a3e57f95a8219458b6cc949fb3",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-07-17T09:48:27Z",
    "title_canon_sha256": "e981933df725258bc7afd6c0529b936afc587833d219bb7c63e45b1ee88c4af8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.3928",
    "kind": "arxiv",
    "version": 1
  }
}