Pith Number

pith:ICM54QW4

pith:2021:ICM54QW4G43QTAVVJKMXSOXZCQ

not attested not anchored not stored refs pending

Silicon Photonic Architecture for Training Deep Neural Networks with Direct Feedback Alignment

Bhavin J. Shastri, Bicky A. Marquez, Hugh D. Morison, Matthew J. Filipovich, Mohammed Al-Qadasi, Paul R. Prucnal, Sudip Shekhar, Volker J. Sorger, Zhimu Guo

arxiv:2111.06862 v2 · 2021-11-12 · cs.LG · physics.app-ph · 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{ICM54QW4G43QTAVVJKMXSOXZCQ}

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	2026-07-05T05:20:09.033365Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4099de42dc37370982b54a99793af91424d675abcd22e16b7add38de01501970

Aliases

arxiv: 2111.06862 · arxiv_version: 2111.06862v2 · doi: 10.48550/arxiv.2111.06862 · pith_short_12: ICM54QW4G43Q · pith_short_16: ICM54QW4G43QTAVV · pith_short_8: ICM54QW4

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/ICM54QW4G43QTAVVJKMXSOXZCQ \
  | 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: 4099de42dc37370982b54a99793af91424d675abcd22e16b7add38de01501970

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5ae2a59687691ac52d8050d657ca0c397eb9c5c51c2a7a52ec93f36de72e7a4b",
    "cross_cats_sorted": [
      "physics.app-ph",
      "physics.optics"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2021-11-12T18:31:51Z",
    "title_canon_sha256": "83d037aa52f62a2417ff1ed720be8e3515be2d30370dde9d919507a11a1eb89b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.06862",
    "kind": "arxiv",
    "version": 2
  }
}