Pith Number

pith:EEOUT6WU

pith:2018:EEOUT6WUSBW5TCAAKO5CX2PIHE

not attested not anchored not stored refs pending

HST imaging of four gravitationally lensed quasars

Anthea L. King, Daniel M. Neri-Larios, David J. E. Floyd, Georgios Vernardos, Kathleen Labrie, Matthew J. O'Dowd, Nicholas F. Bate, Rachel L. Webster, Robert L. Barone-Nugent, Suk Yee Yong

arxiv:1807.03553 v1 · 2018-07-10 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EEOUT6WUSBW5TCAAKO5CX2PIHE}

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	2026-05-18T00:09:24.018983Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

211d49fad4906dd9880053ba2be9e8392f95191f4f5716a074dbe0cebb2c9a1f

Aliases

arxiv: 1807.03553 · arxiv_version: 1807.03553v1 · doi: 10.48550/arxiv.1807.03553 · pith_short_12: EEOUT6WUSBW5 · pith_short_16: EEOUT6WUSBW5TCAA · pith_short_8: EEOUT6WU

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/EEOUT6WUSBW5TCAAKO5CX2PIHE \
  | 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: 211d49fad4906dd9880053ba2be9e8392f95191f4f5716a074dbe0cebb2c9a1f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9975388a0c105440f8a73efb904b97c93c5f316eecceda31b61777464fc62d5c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-07-10T09:51:50Z",
    "title_canon_sha256": "ec79c07b4968fe6303369e0d5f989bd73f8a3e495e906996dd674b011fd44692"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.03553",
    "kind": "arxiv",
    "version": 1
  }
}