Pith Number

pith:PP4U4ICH

pith:2020:PP4U4ICHOYAQCIQHUIVELAPIUO

not attested not anchored not stored refs pending

Green Algorithms: Quantifying the carbon footprint of computation

Jason Grealey, Lo\"ic Lannelongue, Michael Inouye

arxiv:2007.07610 v5 · 2020-07-15 · cs.CY · cs.DC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PP4U4ICHOYAQCIQHUIVELAPIUO}

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	2026-07-05T02:00:12.137268Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7bf94e20477601012207a22a4581e8a392f0f55a1b1d665fbc76b50d73b12cb7

Aliases

arxiv: 2007.07610 · arxiv_version: 2007.07610v5 · doi: 10.48550/arxiv.2007.07610 · pith_short_12: PP4U4ICHOYAQ · pith_short_16: PP4U4ICHOYAQCIQH · pith_short_8: PP4U4ICH

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/PP4U4ICHOYAQCIQHUIVELAPIUO \
  | 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: 7bf94e20477601012207a22a4581e8a392f0f55a1b1d665fbc76b50d73b12cb7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a2cb581cd66a3e2ee26af701546e80bcdf152924e90e85349917ba301837c7e",
    "cross_cats_sorted": [
      "cs.DC"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2020-07-15T11:05:33Z",
    "title_canon_sha256": "bd5f30b6a28ab9da0d6c120f9f669a13b61a4076845a08969ad566d1530de79e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2007.07610",
    "kind": "arxiv",
    "version": 5
  }
}