Pith Number

pith:GHDYR6QH

pith:2026:GHDYR6QH7XB3HNLY3RLUN2RVW5

not attested not anchored not stored refs pending

Testing the recovery of the NGC 6505 Einstein ring in deep OSN 1.5-m imaging

Alejandro Heredia Teva, Eugenio Grande S\'aez, Fernando N\'u\~nez Mart\'inez, Homer D\'avila Guti\'errez, Irene Naranjo Arroyo, Julio Carlos Bertua Marasca, Miguel Ruiz Traves\'i

arxiv:2607.12209 v1 · 2026-07-13 · 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{GHDYR6QH7XB3HNLY3RLUN2RVW5}

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	2026-07-15T00:21:38.710437Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

31c788fa07fdc3b3b578dc5746ea35b74c8865f670713c1777be72ff1aead31f

Aliases

arxiv: 2607.12209 · arxiv_version: 2607.12209v1 · doi: 10.48550/arxiv.2607.12209 · pith_short_12: GHDYR6QH7XB3 · pith_short_16: GHDYR6QH7XB3HNLY · pith_short_8: GHDYR6QH

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/GHDYR6QH7XB3HNLY3RLUN2RVW5 \
  | 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: 31c788fa07fdc3b3b578dc5746ea35b74c8865f670713c1777be72ff1aead31f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e2dc318f5666bd621c07f141e401e6cee7449ac489b2a192d0039d9300b92b08",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-07-13T23:18:46Z",
    "title_canon_sha256": "ee5d3568fbe12e4feabda115306cabb279d7b75e23ed9a0c27639dff336be88b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.12209",
    "kind": "arxiv",
    "version": 1
  }
}