Pith Number

pith:33EXRAMD

pith:2017:33EXRAMDF3P2OHQ4GGC3CQGL7K

not attested not anchored not stored refs pending

A collaborative citizen science platform for real-time volunteer computing and games

Francois Grey, Ioannis Charalampidis, Jeremy Cohen, John Darlington, Poonam Yadav

arxiv:1707.09566 v2 · 2017-07-29 · cs.CY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{33EXRAMDF3P2OHQ4GGC3CQGL7K}

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	2026-05-18T00:31:19.050015Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dec97881832edfa71e1c3185b140cbfaad9796204201273ec10b07e8da46dc80

Aliases

arxiv: 1707.09566 · arxiv_version: 1707.09566v2 · doi: 10.48550/arxiv.1707.09566 · pith_short_12: 33EXRAMDF3P2 · pith_short_16: 33EXRAMDF3P2OHQ4 · pith_short_8: 33EXRAMD

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/33EXRAMDF3P2OHQ4GGC3CQGL7K \
  | 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: dec97881832edfa71e1c3185b140cbfaad9796204201273ec10b07e8da46dc80

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c58daa755663831c619cc396ae1dd59503b997ba6849a25d025b757b80cab1c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2017-07-29T22:46:20Z",
    "title_canon_sha256": "c55d929e5d95eea398c76300d7d0ba587313a7110c92c0ca829e11723b3196c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.09566",
    "kind": "arxiv",
    "version": 2
  }
}