Pith Number

pith:DQHQY6UF

pith:2020:DQHQY6UFDW5G6LT2U5KYOHOOS7

not attested not anchored not stored refs pending

GREGOR: Optics Redesign and Updates from 2018-2020

Felix Kr\"amer, Karin Gerber, Lucia Kleint, Miguel Esteves, Olivier Grassin, Reiner Volkmer, Svetlana Berdyugina, Thomas Berkefeld, Thomas Sonner

arxiv:2006.11875 v1 · 2020-06-21 · astro-ph.IM · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DQHQY6UFDW5G6LT2U5KYOHOOS7}

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	2026-07-05T01:32:08.552053Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c0f0c7a851dba6f2e7aa755871dce97d185f691fb3ddfad0f8960d22547282f

Aliases

arxiv: 2006.11875 · arxiv_version: 2006.11875v1 · doi: 10.48550/arxiv.2006.11875 · pith_short_12: DQHQY6UFDW5G · pith_short_16: DQHQY6UFDW5G6LT2 · pith_short_8: DQHQY6UF

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/DQHQY6UFDW5G6LT2U5KYOHOOS7 \
  | 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: 1c0f0c7a851dba6f2e7aa755871dce97d185f691fb3ddfad0f8960d22547282f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7686c91db1ee70e52eab87a933f2d1e42da72aa429d7f17b66368e96f0f460da",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2020-06-21T18:47:18Z",
    "title_canon_sha256": "8e38c86be66f71363051ab90a111862e73a243838db1683e2854ed215e167dde"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2006.11875",
    "kind": "arxiv",
    "version": 1
  }
}