Pith Number

pith:I7DIWS2I

pith:2015:I7DIWS2INLKM3I2PKT5LXGDJKB

not attested not anchored not stored refs pending

Orientation and quasar black hole mass estimation

Jessie Runnoe, Michael S. Brotherton, Vikram Singh

arxiv:1509.06468 v2 · 2015-09-22 · 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{I7DIWS2INLKM3I2PKT5LXGDJKB}

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	2026-05-18T01:27:57.213584Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

47c68b4b486ad4cda34f54fabb9869507b3cc34128b6ad7e2e15b430525ce070

Aliases

arxiv: 1509.06468 · arxiv_version: 1509.06468v2 · doi: 10.48550/arxiv.1509.06468 · pith_short_12: I7DIWS2INLKM · pith_short_16: I7DIWS2INLKM3I2P · pith_short_8: I7DIWS2I

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/I7DIWS2INLKM3I2PKT5LXGDJKB \
  | 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: 47c68b4b486ad4cda34f54fabb9869507b3cc34128b6ad7e2e15b430525ce070

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b581c46bdc28a4cb5805aadd9f0eef7d86d7c481533a6c1f75e6279117c3b3d4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-09-22T05:32:31Z",
    "title_canon_sha256": "d3f0cabd4e5b6c608df6de17ef3adc4f1c6c78260159f642975cbcb6380014bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.06468",
    "kind": "arxiv",
    "version": 2
  }
}