Pith Number

pith:DYA4YSQC

pith:2012:DYA4YSQCPYY4ANDURC32XJWAEF

not attested not anchored not stored refs pending

Black Hole -- Galaxy Co-evolution

Kevin Schawinski (Yale)

arxiv:1206.2661 v1 · 2012-06-12 · 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{DYA4YSQCPYY4ANDURC32XJWAEF}

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	2026-05-18T03:53:43.374152Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1e01cc4a027e31c0347488b7aba6c0217824f6678c6655eb540de1dad15a2185

Aliases

arxiv: 1206.2661 · arxiv_version: 1206.2661v1 · doi: 10.48550/arxiv.1206.2661 · pith_short_12: DYA4YSQCPYY4 · pith_short_16: DYA4YSQCPYY4ANDU · pith_short_8: DYA4YSQC

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/DYA4YSQCPYY4ANDURC32XJWAEF \
  | 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: 1e01cc4a027e31c0347488b7aba6c0217824f6678c6655eb540de1dad15a2185

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a2bc900903d2237d12f15700fbada7991585d4871c1d09f78a14508f3dda71f7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-06-12T20:24:53Z",
    "title_canon_sha256": "bea62116b40711a34218727d69967519661b414103fac917771197ee8e70bb46"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.2661",
    "kind": "arxiv",
    "version": 1
  }
}