Pith Number

pith:IJKPWL5D

pith:2019:IJKPWL5DDAE6S3KUV6ANFTDN7W

not attested not anchored not stored refs pending

Spectroscopic confirmation and modelling of two lensed quadruple quasars in the Dark Energy Survey public footprint

A. Agnello, A. J. Baker, A. V. Sergeyev, C. Spiniello, C. Tortora, F. I. Getman, G. Covone, G. Vernardos, L. Marchetti, L. V. E. Koopmans, M. Vaccari, N. R. Napolitano, S. Serjeant, T. H. Jarrett, V. Shalyapin

arxiv:1901.04414 v2 · 2019-01-14 · astro-ph.GA · astro-ph.CO · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IJKPWL5DDAE6S3KUV6ANFTDN7W}

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	2026-05-17T23:50:21.861613Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4254fb2fa31809e96d54af80d2cc6dfd8afd2e915526b2c399e893748db537cd

Aliases

arxiv: 1901.04414 · arxiv_version: 1901.04414v2 · doi: 10.48550/arxiv.1901.04414 · pith_short_12: IJKPWL5DDAE6 · pith_short_16: IJKPWL5DDAE6S3KU · pith_short_8: IJKPWL5D

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/IJKPWL5DDAE6S3KUV6ANFTDN7W \
  | 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: 4254fb2fa31809e96d54af80d2cc6dfd8afd2e915526b2c399e893748db537cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "562449a25f40cae3b294491ceedf937b7b1b9ef23380239b47f7b6afa897c0ba",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-01-14T17:19:00Z",
    "title_canon_sha256": "d859d1f70b052293eecc1399d0b30a91c3a3cef3c0c7e9ff226ede7dcb6d64ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.04414",
    "kind": "arxiv",
    "version": 2
  }
}