Pith Number

pith:GNJNF7HM

pith:2011:GNJNF7HMNJL7EQ7KRNRWLDLQP2

not attested not anchored not stored refs pending

Spectral classification of emission-line galaxies from the Sloan Digital Sky Survey. II. A supplementary diagnostic for AGNs using the Dn(4000) index

Emeric Hache (LATT), Fabrice Lamareille (LATT), Julien Marocco (LATT)

arxiv:1105.0488 v2 · 2011-05-03 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GNJNF7HMNJL7EQ7KRNRWLDLQP2}

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	2026-05-18T04:19:55.661438Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3352d2fcec6a57f243ea8b63658d707e8e32aca536d2cefd7f46fe78c201051f

Aliases

arxiv: 1105.0488 · arxiv_version: 1105.0488v2 · doi: 10.48550/arxiv.1105.0488 · pith_short_12: GNJNF7HMNJL7 · pith_short_16: GNJNF7HMNJL7EQ7K · pith_short_8: GNJNF7HM

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/GNJNF7HMNJL7EQ7KRNRWLDLQP2 \
  | 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: 3352d2fcec6a57f243ea8b63658d707e8e32aca536d2cefd7f46fe78c201051f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c8bc16fd247b7c6faefd47573ad61cc9938976fe3e02bdebb6807c920aa21678",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-05-03T06:58:17Z",
    "title_canon_sha256": "392556ffc2cd0b87518c72afc99a47e150ca3d4c2954437ecd5830564d4b372a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.0488",
    "kind": "arxiv",
    "version": 2
  }
}