Pith Number

pith:JMBU2D4U

pith:2018:JMBU2D4UJGJD6GHNYPIQV6A33W

not attested not anchored not stored refs pending

Can we improve CIV-based single epoch black hole mass estimations?

B. Trakhtenbrot, H. Netzer, J. E. Mej\'ia-Restrepo, P. Lira

arxiv:1805.00942 v1 · 2018-05-02 · 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{JMBU2D4UJGJD6GHNYPIQV6A33W}

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	2026-05-18T00:16:53.042051Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4b034d0f9449923f18edc3d10af81bdd8eafe7ffa04307f1350bcd9664c37620

Aliases

arxiv: 1805.00942 · arxiv_version: 1805.00942v1 · doi: 10.48550/arxiv.1805.00942 · pith_short_12: JMBU2D4UJGJD · pith_short_16: JMBU2D4UJGJD6GHN · pith_short_8: JMBU2D4U

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/JMBU2D4UJGJD6GHNYPIQV6A33W \
  | 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: 4b034d0f9449923f18edc3d10af81bdd8eafe7ffa04307f1350bcd9664c37620

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "23df64468413e0252299c1220e80756c60fd1f87b53ef1ebd8e0166c328cf132",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-05-02T18:00:01Z",
    "title_canon_sha256": "6dbb6437d7b83bc2e1b3e23f96e51805b2b8d5b854dd15e000d7f6ac38f1ff12"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.00942",
    "kind": "arxiv",
    "version": 1
  }
}