Pith Number

pith:HCAGTMKB

pith:2018:HCAGTMKBGF3VI4ZWKSLA6GQ3E4

not attested not anchored not stored refs pending

Backprop Evolution

Barret Zoph, Irwan Bello, Maximilian Alber, Pieter-Jan Kindermans, Prajit Ramachandran, Quoc Le

arxiv:1808.02822 v1 · 2018-08-08 · cs.NE · cs.LG · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HCAGTMKBGF3VI4ZWKSLA6GQ3E4}

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	2026-05-18T00:08:32.112390Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

388069b141317754733654960f1a1b271ca2eca69b6f2c1f875055f75ff10ece

Aliases

arxiv: 1808.02822 · arxiv_version: 1808.02822v1 · doi: 10.48550/arxiv.1808.02822 · pith_short_12: HCAGTMKBGF3V · pith_short_16: HCAGTMKBGF3VI4ZW · pith_short_8: HCAGTMKB

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/HCAGTMKBGF3VI4ZWKSLA6GQ3E4 \
  | 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: 388069b141317754733654960f1a1b271ca2eca69b6f2c1f875055f75ff10ece

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "83d1a358f87be0b469d337975680e6a6e7d26a13e40c91198382cda2c29cf13b",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NE",
    "submitted_at": "2018-08-08T15:23:14Z",
    "title_canon_sha256": "fd76eb20afe54d2396c0a3dc52321c784cd3039744e90e067d99d1e7765d8c45"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.02822",
    "kind": "arxiv",
    "version": 1
  }
}