Pith Number

pith:OVS5DBM7

pith:2015:OVS5DBM7WVMPNJUN2AGHXZDS2F

not attested not anchored not stored refs pending

Observing Supermassive Black Holes across cosmic time: from phenomenology to physics

A. Merloni (MPE)

arxiv:1505.04940 v1 · 2015-05-19 · astro-ph.HE · 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{OVS5DBM7WVMPNJUN2AGHXZDS2F}

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	2026-05-18T01:12:13.451975Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7565d1859fb558f6a68dd00c7be472d17bf68632cb7a87cc41f040cff503edbc

Aliases

arxiv: 1505.04940 · arxiv_version: 1505.04940v1 · doi: 10.48550/arxiv.1505.04940 · pith_short_12: OVS5DBM7WVMP · pith_short_16: OVS5DBM7WVMPNJUN · pith_short_8: OVS5DBM7

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/OVS5DBM7WVMPNJUN2AGHXZDS2F \
  | 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: 7565d1859fb558f6a68dd00c7be472d17bf68632cb7a87cc41f040cff503edbc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "de7101b2d7616eff7027f00fc4e526f2e421cc6a06e8aa520f56b6739363a2f2",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-05-19T10:15:47Z",
    "title_canon_sha256": "d413c50bb36a5abc0bc24ff29ef495e8772fb25e684830ceaa3f322dad7df554"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.04940",
    "kind": "arxiv",
    "version": 1
  }
}