Pith Number

pith:ESZWCWLH

pith:2021:ESZWCWLHVFQ4246H75FU2VVSTE

not attested not anchored not stored refs pending

Estimating black hole masses in obscured AGN using X-rays

Dina A. Michel (George Mason University), James K. Williams, Mario Gliozzi

arxiv:2101.07736 v1 · 2021-01-19 · astro-ph.HE · 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{ESZWCWLHVFQ4246H75FU2VVSTE}

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	2026-07-05T02:12:16.371251Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

24b3615967a961cd73c7ff4b4d56b299117b5f6475c46c01dcc9b5eedd7496bb

Aliases

arxiv: 2101.07736 · arxiv_version: 2101.07736v1 · doi: 10.48550/arxiv.2101.07736 · pith_short_12: ESZWCWLHVFQ4 · pith_short_16: ESZWCWLHVFQ4246H · pith_short_8: ESZWCWLH

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/ESZWCWLHVFQ4246H75FU2VVSTE \
  | 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: 24b3615967a961cd73c7ff4b4d56b299117b5f6475c46c01dcc9b5eedd7496bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d502869b72c89482a8384744f8d961fbc74495a08cfd7f22639d25351fc4ce36",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-01-19T17:18:07Z",
    "title_canon_sha256": "37560b2248998bbf6e903603c5feeaadf0be48301943f3b651a9803723fabb14"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.07736",
    "kind": "arxiv",
    "version": 1
  }
}