Pith Number

pith:SYJXKC3M

pith:1998:SYJXKC3MZW5E4JTOGP37GQQK6H

not attested not anchored not stored refs pending

Accretion Disks Around Black Holes: Twenty Five Years Later

Calcutta), Salt Lake, Sandip K. Chakrabarti (S.N. Bose National Centre for Basic Sciences

arxiv:astro-ph/9807104 v1 · 1998-07-10 · 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{SYJXKC3MZW5E4JTOGP37GQQK6H}

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	2026-05-18T01:21:49.867302Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9613750b6ccdba4e266e33f7f3420af1c79acf38e0736594e860e71b00fc90e3

Aliases

arxiv: astro-ph/9807104 · arxiv_version: astro-ph/9807104v1 · doi: 10.48550/arxiv.astro-ph/9807104 · pith_short_12: SYJXKC3MZW5E · pith_short_16: SYJXKC3MZW5E4JTO · pith_short_8: SYJXKC3M

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/SYJXKC3MZW5E4JTOGP37GQQK6H \
  | 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: 9613750b6ccdba4e266e33f7f3420af1c79acf38e0736594e860e71b00fc90e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0fbe0154febdcc6a9db8cad14b3cb9b49690acbb69039b3943fa9311e0c291c6",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-07-10T12:35:36Z",
    "title_canon_sha256": "b1de033f1655b1cfe27a1296dc6b81019eee50f83a8dfe14249ce866037a133f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9807104",
    "kind": "arxiv",
    "version": 1
  }
}