Pith Number

pith:2ZNMPQLT

pith:2018:2ZNMPQLTPWYBCECF2AW55N5RSC

not attested not anchored not stored refs pending

The Accretion History of AGN I: Supermassive Black Hole Population Synthesis Model

Allison Kirkpatrick, Claudia Megan Urry, Claudio Ricci, Ezequiel Treister, Johannes Buchner, Michael Tremmel, Stefano Marchesi, Stephanie LaMassa, Tonima Tasnim Ananna

arxiv:1810.02298 v2 · 2018-10-04 · astro-ph.GA · astro-ph.HE

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

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	2026-05-17T23:54:15.983828Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d65ac7c1737db0111045d02ddeb7b190833dd4be5243b49a372b39d0d8242c68

Aliases

arxiv: 1810.02298 · arxiv_version: 1810.02298v2 · doi: 10.48550/arxiv.1810.02298 · pith_short_12: 2ZNMPQLTPWYB · pith_short_16: 2ZNMPQLTPWYBCECF · pith_short_8: 2ZNMPQLT

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/2ZNMPQLTPWYBCECF2AW55N5RSC \
  | 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: d65ac7c1737db0111045d02ddeb7b190833dd4be5243b49a372b39d0d8242c68

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "17aa48f4a2c86c2676823853c3f94551e59ff91eeba7d680e12c06d793c0c391",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-10-04T16:24:28Z",
    "title_canon_sha256": "fa9017d4fc1fbf61ba089638f9de962f5f2bb6a53318763acf39dd090c7ef710"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.02298",
    "kind": "arxiv",
    "version": 2
  }
}