Pith Number

pith:RA7FKRKW

pith:2006:RA7FKRKW22PYTJ4LSBLQUNND5X

not attested not anchored not stored refs pending

Black-Hole Accretion Disc as an Analogue Gravity Model

Neven Bilic, Surajit Dasgupta, Tapas Kumar Das

arxiv:astro-ph/0604477 v2 · 2006-04-21 · astro-ph · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RA7FKRKW22PYTJ4LSBLQUNND5X}

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	2026-05-18T04:38:37.454822Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

883e554556d69f89a78b90570a35a3edd7934abd47a04eaf599df91b6a74d1e5

Aliases

arxiv: astro-ph/0604477 · arxiv_version: astro-ph/0604477v2 · doi: 10.48550/arxiv.astro-ph/0604477 · pith_short_12: RA7FKRKW22PY · pith_short_16: RA7FKRKW22PYTJ4L · pith_short_8: RA7FKRKW

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/RA7FKRKW22PYTJ4LSBLQUNND5X \
  | 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: 883e554556d69f89a78b90570a35a3edd7934abd47a04eaf599df91b6a74d1e5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87c10ee5e0a425cbb61f1594c3ba863447dd6da6405134766123301bdc713d97",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-04-21T20:12:21Z",
    "title_canon_sha256": "48bdcbb918ffc5bd687035670da713d3720ad237e80eb1be67d0b4d6731d78a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0604477",
    "kind": "arxiv",
    "version": 2
  }
}