Pith Number

pith:PT34JOJX

pith:2021:PT34JOJXRIZ3U5QQHNGP7LJTZW

not attested not anchored not stored refs pending

A Search for Blazar Activity in Broad-Absorption-Line Quasars

Amit Kumar, Gopal-Krishna, Hum Chand, Krishan Chand, Sapna Mishra, Vibhore Negi

arxiv:2108.05332 v1 · 2021-08-11 · 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{PT34JOJXRIZ3U5QQHNGP7LJTZW}

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	2026-07-05T03:09:13.024632Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7cf7c4b9378a33ba76103b4cffad33cdbaee23ce6534573973d8a1883cca3e67

Aliases

arxiv: 2108.05332 · arxiv_version: 2108.05332v1 · doi: 10.48550/arxiv.2108.05332 · pith_short_12: PT34JOJXRIZ3 · pith_short_16: PT34JOJXRIZ3U5QQ · pith_short_8: PT34JOJX

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/PT34JOJXRIZ3U5QQHNGP7LJTZW \
  | 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: 7cf7c4b9378a33ba76103b4cffad33cdbaee23ce6534573973d8a1883cca3e67

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd570fd19bb076b2e3cdcb8b93726e826f28ce4b0689b437c15fafcbcf54b7e6",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-08-11T17:19:52Z",
    "title_canon_sha256": "62ca5134d2dd7677ece60ba862f3752118ea6f530b40faae7f1217c00b2ac905"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.05332",
    "kind": "arxiv",
    "version": 1
  }
}