Pith Number

pith:E557JAEZ

pith:2019:E557JAEZX5DKSVGS3VDBXYN5EJ

not attested not anchored not stored refs pending

Evaluating Memento Service Optimizations

Harihar Shankar, Lyudmila Balakireva, Martin Klein

arxiv:1906.00058 v1 · 2019-05-31 · cs.IR · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{E557JAEZX5DKSVGS3VDBXYN5EJ}

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	2026-05-17T23:44:33.576580Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

277bf48099bf46a954d2dd461be1bd225856e766a0241b0cb994ba202f250c13

Aliases

arxiv: 1906.00058 · arxiv_version: 1906.00058v1 · doi: 10.48550/arxiv.1906.00058 · pith_short_12: E557JAEZX5DK · pith_short_16: E557JAEZX5DKSVGS · pith_short_8: E557JAEZ

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/E557JAEZX5DKSVGS3VDBXYN5EJ \
  | 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: 277bf48099bf46a954d2dd461be1bd225856e766a0241b0cb994ba202f250c13

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e193799e04d4add9c736cf4d48f5c859564e9a9311b19457b44d5006b1c67ce",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2019-05-31T20:09:41Z",
    "title_canon_sha256": "5d828bfaacb8ba1aca7dd46c8fc0f7bbe39eace6a21ed8c586772995c4ea7019"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.00058",
    "kind": "arxiv",
    "version": 1
  }
}