Pith Number

pith:M24EAEVU

pith:2009:M24EAEVUVUEBQ5AGKVZLKFDF2K

not attested not anchored not stored refs pending

Optical variability of radio-intermediate quasars

Arti Goyal, D. K. Sahu, G. C. Anupama, Gopal-Krishna, Paul J. Wiita, R. Sagar, S. Joshi

arxiv:0910.1487 v1 · 2009-10-08 · 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{M24EAEVUVUEBQ5AGKVZLKFDF2K}

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	2026-05-18T02:11:25.565102Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

66b84012b4ad081874065572b51465d2a041c937090b57953d15636eaa28fb88

Aliases

arxiv: 0910.1487 · arxiv_version: 0910.1487v1 · doi: 10.48550/arxiv.0910.1487 · pith_short_12: M24EAEVUVUEB · pith_short_16: M24EAEVUVUEBQ5AG · pith_short_8: M24EAEVU

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/M24EAEVUVUEBQ5AGKVZLKFDF2K \
  | 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: 66b84012b4ad081874065572b51465d2a041c937090b57953d15636eaa28fb88

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "433c485429c34346de60a4c3c320114a3c8eae15770b79936d6ff73cdfb1a686",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-10-08T12:29:28Z",
    "title_canon_sha256": "137f75a828ed673ff80aaeabded780a6ec8a2da9ee871ed07141499966190db4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.1487",
    "kind": "arxiv",
    "version": 1
  }
}