Pith Number

pith:IEQOED5T

pith:2007:IEQOED5TJSF2P4D3RPG576PMX2

not attested not anchored not stored refs pending

Sgr A$^*$: a laboratory to measure the central black hole and cluster parameters

A.A. Nucita, A.F. Zakharov, A. Qadir, F. De Paolis, G. Ingrosso

arxiv:0705.0494 v1 · 2007-05-03 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IEQOED5TJSF2P4D3RPG576PMX2}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:16:31.205551Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4120e20fb34c8ba7f07b8bcddff9ecbea1edbb537c83accd0006bb7f7d4e2c3f

Aliases

arxiv: 0705.0494 · arxiv_version: 0705.0494v1 · doi: 10.48550/arxiv.0705.0494 · pith_short_12: IEQOED5TJSF2 · pith_short_16: IEQOED5TJSF2P4D3 · pith_short_8: IEQOED5T

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/IEQOED5TJSF2P4D3RPG576PMX2 \
  | 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: 4120e20fb34c8ba7f07b8bcddff9ecbea1edbb537c83accd0006bb7f7d4e2c3f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "faa2a0277739c5d61da9223959dae039d7a86811b9e58731ecf981ecc1f79306",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-05-03T16:12:44Z",
    "title_canon_sha256": "0106c0da25c0a7678f6f36abf2dd522d97ea95dc508a9081b3b2b57970c494bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0705.0494",
    "kind": "arxiv",
    "version": 1
  }
}