Pith Number

pith:SDG6R6IJ

pith:2016:SDG6R6IJDBFHPCBL44OW6VUG7R

not attested not anchored not stored refs pending

Cosmology with AGN: can we use quasars as standard candles?

E. Lusso, G. Risaliti

arxiv:1612.02838 v1 · 2016-12-08 · 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{SDG6R6IJDBFHPCBL44OW6VUG7R}

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	2026-05-18T00:44:51.932329Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

90cde8f909184a77882be71d6f5686fc4186f76057e05c56db30cb3535e59701

Aliases

arxiv: 1612.02838 · arxiv_version: 1612.02838v1 · doi: 10.48550/arxiv.1612.02838 · pith_short_12: SDG6R6IJDBFH · pith_short_16: SDG6R6IJDBFHPCBL · pith_short_8: SDG6R6IJ

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/SDG6R6IJDBFHPCBL44OW6VUG7R \
  | 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: 90cde8f909184a77882be71d6f5686fc4186f76057e05c56db30cb3535e59701

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "47f57a542e19c13eea0ba1477a89edd2a14c8eb25945f358af13a37d00de81e2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2016-12-08T21:04:27Z",
    "title_canon_sha256": "55d91f75f065f0be44c54e254b8c7894660eb7c09a1e9220bee6955c9d26035b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.02838",
    "kind": "arxiv",
    "version": 1
  }
}