Pith Number

pith:HUSVUBPQ

pith:2011:HUSVUBPQ5NGIRCEHYC42JOG5TV

not attested not anchored not stored refs pending

SPH Simulations of Black Hole Accretion: A Step to Model Black Hole Feedback in Galaxies

Daniel Proga, Kentaro Nagamine (UNLV), Paramita Barai

arxiv:1102.3925 v3 · 2011-02-18 · astro-ph.CO · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HUSVUBPQ5NGIRCEHYC42JOG5TV}

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	2026-05-18T04:04:44.835302Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d255a05f0eb4c888887c0b9a4b8dd9d6f0fd2b76d4bf6a00c2001fedc086ccb

Aliases

arxiv: 1102.3925 · arxiv_version: 1102.3925v3 · doi: 10.48550/arxiv.1102.3925 · pith_short_12: HUSVUBPQ5NGI · pith_short_16: HUSVUBPQ5NGIRCEH · pith_short_8: HUSVUBPQ

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/HUSVUBPQ5NGIRCEHYC42JOG5TV \
  | 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: 3d255a05f0eb4c888887c0b9a4b8dd9d6f0fd2b76d4bf6a00c2001fedc086ccb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7bb5915a3d5c1f73f6fa0cc6a1e00b4e58576a6d7801d061fdc55b9b58ba2a39",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-02-18T21:41:57Z",
    "title_canon_sha256": "a8ea68ab1c68d008ed60ef5b26d5414c84637cd07cb70914d2c9de8a15cc1376"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.3925",
    "kind": "arxiv",
    "version": 3
  }
}