Pith Number

pith:5Y5BAOQT

pith:2003:5Y5BAOQTTB5GLUTF2LPQVXLM6A

not attested not anchored not stored refs pending

The galactic center black hole as a possible retro-lens for the S2 orbiting star

A.A. Nucita, A. Geralico, F. De Paolis, G. Ingrosso

arxiv:astro-ph/0307493 v1 · 2003-07-29 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5Y5BAOQTTB5GLUTF2LPQVXLM6A}

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	2026-07-04T16:51:22.166178Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ee3a103a13987a65d265d2df0add6cf013430cae0e3b008997e183a5736d54d2

Aliases

arxiv: astro-ph/0307493 · arxiv_version: astro-ph/0307493v1 · doi: 10.48550/arxiv.astro-ph/0307493 · pith_short_12: 5Y5BAOQTTB5G · pith_short_16: 5Y5BAOQTTB5GLUTF · pith_short_8: 5Y5BAOQT

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/5Y5BAOQTTB5GLUTF2LPQVXLM6A \
  | 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: ee3a103a13987a65d265d2df0add6cf013430cae0e3b008997e183a5736d54d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c20a5269d324d8d97cbbb6c68fd67c47c7abb246212fffdedfd277c572e510c3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-07-29T08:11:44Z",
    "title_canon_sha256": "43e7bf786dc419f5b7239d00c3055c1240a34e797a09ec2e09b0f1b588ee0814"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0307493",
    "kind": "arxiv",
    "version": 1
  }
}