Pith Number

pith:NNTBQFQC

pith:2019:NNTBQFQCE5J5RNMBCJ4TVYRUDK

not attested not anchored not stored refs pending

The Spectral Energy Distributions of Active Galactic Nuclei

C. Ricci, H. Landt, K. J. Duncan, M. J. I. Brown, M. Kirk, M. Salvato, N. Kamraj, T. Ananna

arxiv:1908.03720 v1 · 2019-08-10 · 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{NNTBQFQCE5J5RNMBCJ4TVYRUDK}

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	2026-07-05T00:06:53.190401Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b661816022753d8b58112793ae2341ab59b0f6f7057b196436150c124453e5d

Aliases

arxiv: 1908.03720 · arxiv_version: 1908.03720v1 · doi: 10.48550/arxiv.1908.03720 · pith_short_12: NNTBQFQCE5J5 · pith_short_16: NNTBQFQCE5J5RNMB · pith_short_8: NNTBQFQC

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/NNTBQFQCE5J5RNMBCJ4TVYRUDK \
  | 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: 6b661816022753d8b58112793ae2341ab59b0f6f7057b196436150c124453e5d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e960197db876c81238cd8f6f7d8f6d8a541bb6ecacd764cff3a0d8b1502c803e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-08-10T09:51:19Z",
    "title_canon_sha256": "28b276e42aaf4bb10445acf1121381c1b070d675adf33c22830591c74c440b2a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.03720",
    "kind": "arxiv",
    "version": 1
  }
}