Pith Number

pith:XQWH2QIP

pith:2022:XQWH2QIPNT3MF2V57BCVV5UV7O

not attested not anchored not stored refs pending

Spectroastrometry and Reverberation Mapping: the Mass and Geometric Distance of the Supermassive Black Hole in the Quasar 3C 273

Chen Hu, Jian-Min Wang, Ming Xiao, Pu Du, Yan-Rong Li, Yu-Yang Songsheng, Zhi-Xiang Zhang

arxiv:2201.04470 v1 · 2022-01-12 · astro-ph.GA · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XQWH2QIPNT3MF2V57BCVV5UV7O}

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.

Cited by

1 paper in Pith

Cosmology Intertwined: A Review of the Particle Physics, Astrophysics, and Cosmology Associated with the Cosmological Tensions and Anomalies

Receipt and verification

First computed	2026-07-05T04:04:01.335350Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc2c7d410f6cf6c2eabdf8455af695fb93c46e5a7e0eab5b744c0fbd0893cf44

Aliases

arxiv: 2201.04470 · arxiv_version: 2201.04470v1 · doi: 10.48550/arxiv.2201.04470 · pith_short_12: XQWH2QIPNT3M · pith_short_16: XQWH2QIPNT3MF2V5 · pith_short_8: XQWH2QIP

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/XQWH2QIPNT3MF2V57BCVV5UV7O \
  | 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: bc2c7d410f6cf6c2eabdf8455af695fb93c46e5a7e0eab5b744c0fbd0893cf44

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8db40fc96ac003b29af6e091158392bc422384e8d678625200fc88c1e83c6b2b",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2022-01-12T13:38:46Z",
    "title_canon_sha256": "a1cae0a073d6bc78582ccc17ece0cb7a41c105c25975116e3fbfdc51a4f0d5d2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2201.04470",
    "kind": "arxiv",
    "version": 1
  }
}