Pith Number

pith:QS4CVMGL

pith:2019:QS4CVMGLUBLQVB7LAW6PHGVN3I

not attested not anchored not stored refs pending

Using Micro-collections in Social Media to Generate Seeds for Web Archive Collections

Alexander C. Nwala, Michael L. Nelson, Michele C. Weigle

arxiv:1905.12220 v1 · 2019-05-29 · cs.DL · cs.IR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QS4CVMGLUBLQVB7LAW6PHGVN3I}

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	2026-05-17T23:44:46.765216Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84b82ab0cba0570a87eb05bcf39aadda0f6a876437520ef27c5166fc0d7a816c

Aliases

arxiv: 1905.12220 · arxiv_version: 1905.12220v1 · doi: 10.48550/arxiv.1905.12220 · pith_short_12: QS4CVMGLUBLQ · pith_short_16: QS4CVMGLUBLQVB7L · pith_short_8: QS4CVMGL

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/QS4CVMGLUBLQVB7LAW6PHGVN3I \
  | 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: 84b82ab0cba0570a87eb05bcf39aadda0f6a876437520ef27c5166fc0d7a816c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0505d2640a9e8c61fb40991cf8ad326db3f2d2f63d7841ceab7dfec18dfbf5ee",
    "cross_cats_sorted": [
      "cs.IR"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.DL",
    "submitted_at": "2019-05-29T05:19:58Z",
    "title_canon_sha256": "120a356624238a240f9e306e642dbf1bc61c9561e9814acd6d39a268c29c8a34"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.12220",
    "kind": "arxiv",
    "version": 1
  }
}