Pith Number

pith:VT3YN2VU

pith:2013:VT3YN2VUOEGQCRSXRIXBUCAIXM

not attested not anchored not stored refs pending

Red bulgeless galaxies in SDSS DR7. Are there any AGN hosts?

Bruno Coelho, Bruno Ribeiro, Catarina Lobo, Sonia Ant\'on

arxiv:1309.4120 v1 · 2013-09-16 · 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{VT3YN2VUOEGQCRSXRIXBUCAIXM}

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	2026-05-18T01:47:36.983349Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

acf786eab4710d0146578a2e1a0808bb059aa823307231daf46da0c89742bdaf

Aliases

arxiv: 1309.4120 · arxiv_version: 1309.4120v1 · doi: 10.48550/arxiv.1309.4120 · pith_short_12: VT3YN2VUOEGQ · pith_short_16: VT3YN2VUOEGQCRSX · pith_short_8: VT3YN2VU

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/VT3YN2VUOEGQCRSXRIXBUCAIXM \
  | 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: acf786eab4710d0146578a2e1a0808bb059aa823307231daf46da0c89742bdaf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "32039537625c189134aef7670eb23a65a11f22e307f5acd3da39bd8d115d781c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-09-16T21:12:11Z",
    "title_canon_sha256": "1bd7448eff9c73b826c44bde3117ea4a617ccd550fea6aba604b5eb0a835cdd4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.4120",
    "kind": "arxiv",
    "version": 1
  }
}