Pith Number

pith:PTGONNPO

pith:2019:PTGONNPO7FXW5JNKLDMZB5R432

not attested not anchored not stored refs pending

Are there broad absorption-line blazars?

2), Gopal-Krishna (1), Hum Chand (1), India (2) Department of Physics & Astrophysics, Krishan Chand (1), Manora Peak, Sapna Mishra (1, University of Delhi), Vineet Ojha (1) ((1) Aryabhatta Research Institute of Observational Sciences (ARIES)

arxiv:1908.01015 v1 · 2019-08-02 · 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{PTGONNPO7FXW5JNKLDMZB5R432}

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	2026-07-04T23:55:48.627829Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ccce6b5eef96f6ea5aa58d990f63cdeb48515ffb4d090b8eb4ac5fbebed8d77

Aliases

arxiv: 1908.01015 · arxiv_version: 1908.01015v1 · doi: 10.48550/arxiv.1908.01015 · pith_short_12: PTGONNPO7FXW · pith_short_16: PTGONNPO7FXW5JNK · pith_short_8: PTGONNPO

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/PTGONNPO7FXW5JNKLDMZB5R432 \
  | 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: 7ccce6b5eef96f6ea5aa58d990f63cdeb48515ffb4d090b8eb4ac5fbebed8d77

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "70996cd9aeba40c797242f21183a45a4ea628ca04c1d20291f2a49bb27540355",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-08-02T18:56:02Z",
    "title_canon_sha256": "e587f8841afe147bfcc89f2f0bc54129a118b69d4432a2f397c17bd6ffef7fa2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.01015",
    "kind": "arxiv",
    "version": 1
  }
}