Pith Number

pith:QY23M4W4

pith:2003:QY23M4W4NJSL53FOQB23DJHAOC

not attested not anchored not stored refs pending

GRS 1915+105: The brightest Galactic black hole

C. Done, G. Wardzinski, M. Gierlinski

arxiv:astro-ph/0308536 v2 · 2003-08-29 · 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{QY23M4W4NJSL53FOQB23DJHAOC}

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	2026-07-04T16:51:32.564812Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8635b672dc6a64beecae8075b1a4e0709bfc6aa3d7f9043460977bb2a093279d

Aliases

arxiv: astro-ph/0308536 · arxiv_version: astro-ph/0308536v2 · doi: 10.48550/arxiv.astro-ph/0308536 · pith_short_12: QY23M4W4NJSL · pith_short_16: QY23M4W4NJSL53FO · pith_short_8: QY23M4W4

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/QY23M4W4NJSL53FOQB23DJHAOC \
  | 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: 8635b672dc6a64beecae8075b1a4e0709bfc6aa3d7f9043460977bb2a093279d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "45fa8471cf394d217d839173d9f4cd4947cf51a37136acc4596e8e8b6e1d0bab",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-08-29T14:14:09Z",
    "title_canon_sha256": "ca418727764fc34030aed591d99067cc236221fcaf1bf58db2a955af3be2f9cb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0308536",
    "kind": "arxiv",
    "version": 2
  }
}