Pith Number

pith:DQ7FEQJ3

pith:2019:DQ7FEQJ3FQILDHIF5AF3ZGJV4R

not attested not anchored not stored refs pending

Towards a multi-input astrophotonic AWG spectrograph

Joss Bland-Hawthorn, Mario Dagenais, Pradip Gatkine, Sylvain Veilleux, Yiwen Hu

arxiv:1905.13241 v1 · 2019-05-30 · astro-ph.IM · physics.ins-det · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DQ7FEQJ3FQILDHIF5AF3ZGJV4R}

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	2026-05-17T23:44:37.233058Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c3e52413b2c10b19d05e80bbc9935e47d5a39d4391e0936deda429cda543633

Aliases

arxiv: 1905.13241 · arxiv_version: 1905.13241v1 · doi: 10.48550/arxiv.1905.13241 · pith_short_12: DQ7FEQJ3FQIL · pith_short_16: DQ7FEQJ3FQILDHIF · pith_short_8: DQ7FEQJ3

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/DQ7FEQJ3FQILDHIF5AF3ZGJV4R \
  | 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: 1c3e52413b2c10b19d05e80bbc9935e47d5a39d4391e0936deda429cda543633

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e5db5e67a3ab254379401cc7f1ca83dfef40f60f2e1a94c7b7f341664c27726",
    "cross_cats_sorted": [
      "physics.ins-det",
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-05-30T18:00:41Z",
    "title_canon_sha256": "e700211b6ef77aa33585c16269bb861c50f6525a6ad9ae50a453a5e6a34a319f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.13241",
    "kind": "arxiv",
    "version": 1
  }
}