Pith Number

pith:PQL6JBT4

pith:2016:PQL6JBT4LLKC2UINZSM64UDQT7

not attested not anchored not stored refs pending

Unveiling the submerged part of the iceberg: radio-loud narrow-line Seyfert 1s with SKA

A. Caccianiga, E. Congiu, G. La Mura, J.L. Richards, L. Foschini, L. Marafatto, M. Berton, P. Rafanelli, S. Ciroi, V. Cracco

arxiv:1601.05791 v2 · 2016-01-21 · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PQL6JBT4LLKC2UINZSM64UDQT7}

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	2026-05-18T01:20:03.160948Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c17e4867c5ad42d510dcc99ee50709fd201d1836bbd8d97c40d5d6e5350d012

Aliases

arxiv: 1601.05791 · arxiv_version: 1601.05791v2 · doi: 10.48550/arxiv.1601.05791 · pith_short_12: PQL6JBT4LLKC · pith_short_16: PQL6JBT4LLKC2UIN · pith_short_8: PQL6JBT4

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/PQL6JBT4LLKC2UINZSM64UDQT7 \
  | 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: 7c17e4867c5ad42d510dcc99ee50709fd201d1836bbd8d97c40d5d6e5350d012

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "97f30e7931054fab8c97c46592741952427beb4493b206fb717adeab09f97302",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-01-21T20:59:58Z",
    "title_canon_sha256": "b314e9faca40caca6a30f208f7e5a9eb02ba07a599155b9e7cebaa73ceef72f4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.05791",
    "kind": "arxiv",
    "version": 2
  }
}