Pith Number

pith:SXC2XF5B

pith:2019:SXC2XF5BZKAXYVBCPSXACOABOY

not attested not anchored not stored refs pending

Black hole mass estimates in quasars - A comparative analysis of high- and low-ionization lines

A. Del Olmo, C. A. Negrete, D. Dultzin, E. Bon, G. M. Stirpe, M. A. Martinez-Carballo, M. D' Onofrio, M. L. Martinez-Aldama, N. Bon, P. Marziani

arxiv:1905.00617 v1 · 2019-05-02 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SXC2XF5BZKAXYVBCPSXACOABOY}

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	2026-05-17T23:40:32.231939Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

95c5ab97a1ca817c54227cae013801760450b46de03f46b3b21047c7be1f1937

Aliases

arxiv: 1905.00617 · arxiv_version: 1905.00617v1 · doi: 10.48550/arxiv.1905.00617 · pith_short_12: SXC2XF5BZKAX · pith_short_16: SXC2XF5BZKAXYVBC · pith_short_8: SXC2XF5B

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/SXC2XF5BZKAXYVBCPSXACOABOY \
  | 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: 95c5ab97a1ca817c54227cae013801760450b46de03f46b3b21047c7be1f1937

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7cf945d42b65da0f15e411b9cc444811e971d614af9ea15ffaccf695f1daddf2",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-05-02T08:33:07Z",
    "title_canon_sha256": "a1d0d811c3d910d8f2c39df9cc1763dc60ea67c063528638acd4edb647718406"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.00617",
    "kind": "arxiv",
    "version": 1
  }
}