Pith Number

pith:WXMTIVST

pith:2021:WXMTIVSTTET7LYAS4M4UBD5M7H

not attested not anchored not stored refs pending

Measurement of the supermassive black hole masses in two active galactic nuclei by the photometric reverberation mapping method

A.A. Grokhovskaya, E.A. Malygin, E.S. Shablovinskaya, R.I. Uklein

arxiv:2103.05801 v1 · 2021-03-10 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WXMTIVSTTET7LYAS4M4UBD5M7H}

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	2026-07-05T02:24:54.746035Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b5d93456539927f5e012e339408facf9ca640d0d955bfe5a9fcd3bac9f83db6b

Aliases

arxiv: 2103.05801 · arxiv_version: 2103.05801v1 · doi: 10.48550/arxiv.2103.05801 · pith_short_12: WXMTIVSTTET7 · pith_short_16: WXMTIVSTTET7LYAS · pith_short_8: WXMTIVST

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/WXMTIVSTTET7LYAS4M4UBD5M7H \
  | 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: b5d93456539927f5e012e339408facf9ca640d0d955bfe5a9fcd3bac9f83db6b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "46194efbaf51668451c0dfd0c964af2af291fedfaf44473ffdb4ec5f3c9fca17",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-03-10T01:10:27Z",
    "title_canon_sha256": "a9fb925115e558354c40e210d4dd50b9a359d92a4af2ac3cc336a1857133dca8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.05801",
    "kind": "arxiv",
    "version": 1
  }
}