Pith Number

pith:7T3DMJIJ

pith:2021:7T3DMJIJHQSQZS75SAVRFWPET5

not attested not anchored not stored refs pending

The Challenge of Variable Effort Crowdsourcing and How Visible Gold Can Help

Danula Hettiachchi, Matthew Lease, Mike Schaekermann, Tristan McKinney

arxiv:2105.09457 v1 · 2021-05-20 · cs.HC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7T3DMJIJHQSQZS75SAVRFWPET5}

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	2026-07-05T03:31:27.333771Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fcf63625093c250ccbfd902b12d9e49f7ca6f1f7b55f51b919e9e91245e54dc7

Aliases

arxiv: 2105.09457 · arxiv_version: 2105.09457v1 · doi: 10.48550/arxiv.2105.09457 · pith_short_12: 7T3DMJIJHQSQ · pith_short_16: 7T3DMJIJHQSQZS75 · pith_short_8: 7T3DMJIJ

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/7T3DMJIJHQSQZS75SAVRFWPET5 \
  | 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: fcf63625093c250ccbfd902b12d9e49f7ca6f1f7b55f51b919e9e91245e54dc7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6146da6e7309ac1dfe86c0d7a0d0998667186a197050ded528650f5a91a12b6a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.HC",
    "submitted_at": "2021-05-20T02:21:27Z",
    "title_canon_sha256": "29ce547aaf4afdf3127eb74b015cf2cf315da872fd3961801116345057b6eb85"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.09457",
    "kind": "arxiv",
    "version": 1
  }
}