Pith Number

pith:4ECXXOTF

pith:2018:4ECXXOTF5BYT4EGUCXG23JSILG

not attested not anchored not stored refs pending

Building up spacetime with quantum entanglement II: It from BC-bit

Mark Van Raamsdonk

arxiv:1809.01197 v2 · 2018-09-04 · hep-th · gr-qc · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4ECXXOTF5BYT4EGUCXG23JSILG}

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	2026-05-18T00:06:15.823013Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1057bba65e8713e10d415cdada64859a604a12cbaa7dba1562a6e1b45efdace

Aliases

arxiv: 1809.01197 · arxiv_version: 1809.01197v2 · doi: 10.48550/arxiv.1809.01197 · pith_short_12: 4ECXXOTF5BYT · pith_short_16: 4ECXXOTF5BYT4EGU · pith_short_8: 4ECXXOTF

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/4ECXXOTF5BYT4EGUCXG23JSILG \
  | 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: e1057bba65e8713e10d415cdada64859a604a12cbaa7dba1562a6e1b45efdace

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e674d32c6591485ddf1a58074eef3c6784bbf1a89c8dc43d396ee275e2cd23d",
    "cross_cats_sorted": [
      "gr-qc",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2018-09-04T18:57:14Z",
    "title_canon_sha256": "af3796b44c90c5bdd86efb6efd15b00e93c6d22e240fa554345f06c58bf60998"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.01197",
    "kind": "arxiv",
    "version": 2
  }
}