Pith Number

pith:OPLLAAGR

pith:2012:OPLLAAGRZ23AQDZT7IBWPH4FIC

not attested not anchored not stored refs pending

Integral Field Spectroscopy and multi-wavelength imaging of the nearby spiral galaxy NGC5668: an unusual flattening in metallicity gradient

Africa Castillo-Morales, Almudena Alonso-Herrero, Armando Gil de Paz, Jaime Zamorano, Jes\'us Gallego, Juan Carlos Mu\~noz-Mateos, Pablo G. P\'erez-Gonz\'alez, Raffaella Anna Marino, Samuel Boissier, Sebasti\'an F. S\'anchez

arxiv:1205.5051 v1 · 2012-05-22 · astro-ph.GA

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

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	2026-05-18T01:57:24.249591Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73d6b000d1ceb6080f33fa03679f8540bbdc0d6514de446b3f5a53935b0a76fb

Aliases

arxiv: 1205.5051 · arxiv_version: 1205.5051v1 · doi: 10.48550/arxiv.1205.5051 · pith_short_12: OPLLAAGRZ23A · pith_short_16: OPLLAAGRZ23AQDZT · pith_short_8: OPLLAAGR

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/OPLLAAGRZ23AQDZT7IBWPH4FIC \
  | 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: 73d6b000d1ceb6080f33fa03679f8540bbdc0d6514de446b3f5a53935b0a76fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9bf4b23a28c3b56fbc80459f4d7120da00f2a378bb29d56960b79d9fa40a6f8d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-05-22T20:35:11Z",
    "title_canon_sha256": "ad3b91b89c787081ce9dbc6d4431ca2029ddc40cd43c116f2d8392f960706819"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.5051",
    "kind": "arxiv",
    "version": 1
  }
}