Pith Number

pith:HFMFZPPQ

pith:2017:HFMFZPPQ3EGS76POY4TZAXU6LT

not attested not anchored not stored refs pending

Earth as a Hybrid Planet - The Anthropocene in an Evolutionary Astrobiological Context

Adam Frank, Axel Kleidon, Marina Alberti

arxiv:1708.08121 v1 · 2017-08-27 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HFMFZPPQ3EGS76POY4TZAXU6LT}

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	2026-05-18T00:36:36.932517Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

39585cbdf0d90d2ff9eec727905e9e5cd5ce9f58a031182a43a23829932bf84c

Aliases

arxiv: 1708.08121 · arxiv_version: 1708.08121v1 · doi: 10.48550/arxiv.1708.08121 · pith_short_12: HFMFZPPQ3EGS · pith_short_16: HFMFZPPQ3EGS76PO · pith_short_8: HFMFZPPQ

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/HFMFZPPQ3EGS76POY4TZAXU6LT \
  | 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: 39585cbdf0d90d2ff9eec727905e9e5cd5ce9f58a031182a43a23829932bf84c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d386daf132b385c3d79bea8fa576ba716839d45152493bb52bdced7cc778d4ee",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2017-08-27T18:35:56Z",
    "title_canon_sha256": "ee523f677c1cc52c78d6a3b9eb79d3dd764d912a1b959ef6f96f43275cd50115"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.08121",
    "kind": "arxiv",
    "version": 1
  }
}