Pith Number

pith:MFIQLUG4

pith:2012:MFIQLUG4FQRN33XQOCGYIXZ5P6

not attested not anchored not stored refs pending

Probing the M-sigma Relation in the Non-Local Universe Using Red QSOs

Gabriela Canalizo, Kevin Aylor, Kyle D. Hiner, Margrethe Wold, Mariana Lazarova, Mark Lacy

arxiv:1210.1894 v1 · 2012-10-05 · 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{MFIQLUG4FQRN33XQOCGYIXZ5P6}

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	2026-05-18T01:54:05.118486Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

615105d0dc2c22ddeef0708d845f3d7fa4440153710f0a9c7685b55efd3b5f71

Aliases

arxiv: 1210.1894 · arxiv_version: 1210.1894v1 · doi: 10.48550/arxiv.1210.1894 · pith_short_12: MFIQLUG4FQRN · pith_short_16: MFIQLUG4FQRN33XQ · pith_short_8: MFIQLUG4

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/MFIQLUG4FQRN33XQOCGYIXZ5P6 \
  | 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: 615105d0dc2c22ddeef0708d845f3d7fa4440153710f0a9c7685b55efd3b5f71

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "379f134ad7f44e99122ec54dc1a8e0483ef8c0f0539d3c31f9aad7bc606a66cb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-10-05T23:48:13Z",
    "title_canon_sha256": "0570af9e63aa1d462b0d3058255f7bddff963bfad4bafe36562507bed222d53e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.1894",
    "kind": "arxiv",
    "version": 1
  }
}