Pith Number

pith:LNY6CD3G

pith:2002:LNY6CD3GCH2SLUW67YB2FIX27D

not attested not anchored not stored refs pending

Black Hole Mass Estimates of Radio Selected Quasars

Alicia Oshlack, Matthew Whiting, Rachel Webster

arxiv:astro-ph/0205171 v1 · 2002-05-13 · 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{LNY6CD3GCH2SLUW67YB2FIX27D}

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	2026-07-04T16:29:59.902845Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5b71e10f6611f525d2defe03a2a2faf8f007e747583b7a0799e27d964bbc734e

Aliases

arxiv: astro-ph/0205171 · arxiv_version: astro-ph/0205171v1 · doi: 10.48550/arxiv.astro-ph/0205171 · pith_short_12: LNY6CD3GCH2S · pith_short_16: LNY6CD3GCH2SLUW6 · pith_short_8: LNY6CD3G

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/LNY6CD3GCH2SLUW67YB2FIX27D \
  | 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: 5b71e10f6611f525d2defe03a2a2faf8f007e747583b7a0799e27d964bbc734e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7691a8ff6c957cc983c1ebbd9ca83be547a710d3041e63ab927c5368546137a3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-05-13T06:15:35Z",
    "title_canon_sha256": "2405fc3f63174618b5bddcb3d6c0d69d092d2abbcc743ec501ac82d81dab0335"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0205171",
    "kind": "arxiv",
    "version": 1
  }
}