Pith Number

pith:MMGQUHI2

pith:2009:MMGQUHI2AO25SVKNIEG3GNGGYF

not attested not anchored not stored refs pending

The lenticular galaxy NGC3607: stellar population, metallicity and ionised gas

Charles Bonatto, Mauro G. Rickes, Miriani G. Pastoriza

arxiv:0907.3065 v1 · 2009-07-17 · 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{MMGQUHI2AO25SVKNIEG3GNGGYF}

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	2026-05-18T02:12:56.157566Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

630d0a1d1a03b5d9554d410db334c6c177e672932f0827c41194dc31c91515cb

Aliases

arxiv: 0907.3065 · arxiv_version: 0907.3065v1 · doi: 10.48550/arxiv.0907.3065 · pith_short_12: MMGQUHI2AO25 · pith_short_16: MMGQUHI2AO25SVKN · pith_short_8: MMGQUHI2

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/MMGQUHI2AO25SVKNIEG3GNGGYF \
  | 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: 630d0a1d1a03b5d9554d410db334c6c177e672932f0827c41194dc31c91515cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c9549bee4bcc64656d1f7a535300dba823bdd4bd83bee296d4539cbca872581e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-07-17T13:05:13Z",
    "title_canon_sha256": "22ffc656171bb5d2816e076fac58099aa057c778f96a32fb397497daeb357f18"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.3065",
    "kind": "arxiv",
    "version": 1
  }
}