Pith Number

pith:EK5K5RQW

pith:2009:EK5K5RQWSD3TC2HI4Z37EX2HOQ

not attested not anchored not stored refs pending

Evolution of Supermassive Black Holes from Cosmological Simulations

Ch. Filloux, F. Durier, J.A. de Freitas Pacheco, J. Silk

arxiv:0912.2223 v1 · 2009-12-11 · 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{EK5K5RQWSD3TC2HI4Z37EX2HOQ}

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	2026-05-18T02:33:56.838255Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

22baaec61690f73168e8e677f25f47740c9ec8fbaa2f86fd6fd0c4ff7b3b38e8

Aliases

arxiv: 0912.2223 · arxiv_version: 0912.2223v1 · doi: 10.48550/arxiv.0912.2223 · pith_short_12: EK5K5RQWSD3T · pith_short_16: EK5K5RQWSD3TC2HI · pith_short_8: EK5K5RQW

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/EK5K5RQWSD3TC2HI4Z37EX2HOQ \
  | 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: 22baaec61690f73168e8e677f25f47740c9ec8fbaa2f86fd6fd0c4ff7b3b38e8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "920c031898be87dd90a186b3ecc39e260026d901c05a573e6de187e9f1f738e6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-12-11T13:06:06Z",
    "title_canon_sha256": "6e7af64d6c3923e5a5d5dd048c31f80963ac55bb3760ccb2d96bf8398e2cfd8f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.2223",
    "kind": "arxiv",
    "version": 1
  }
}