Pith Number

pith:UUTSWA7K

pith:2014:UUTSWA7KKTBFM26DOGHGPHG4JD

not attested not anchored not stored refs pending

Presentism meets black holes

Daniela P\'erez, Gustavo E. Romero

arxiv:1403.3655 v1 · 2014-03-14 · physics.gen-ph · physics.hist-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{UUTSWA7KKTBFM26DOGHGPHG4JD}

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	2026-05-18T02:56:19.789477Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a5272b03ea54c2566bc3718e679cdc48faef880353801303805d685374ef8d9a

Aliases

arxiv: 1403.3655 · arxiv_version: 1403.3655v1 · doi: 10.48550/arxiv.1403.3655 · pith_short_12: UUTSWA7KKTBF · pith_short_16: UUTSWA7KKTBFM26D · pith_short_8: UUTSWA7K

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/UUTSWA7KKTBFM26DOGHGPHG4JD \
  | 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: a5272b03ea54c2566bc3718e679cdc48faef880353801303805d685374ef8d9a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c9ea181710c1a42b8d5e84e040c3a6daaf93a1f1cba3efbcd8f878dabe938e47",
    "cross_cats_sorted": [
      "physics.hist-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.gen-ph",
    "submitted_at": "2014-03-14T17:45:14Z",
    "title_canon_sha256": "4a600dd3f8a8ee90c6a0125904d00e712799783a9d6824144c9b7566702ff924"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.3655",
    "kind": "arxiv",
    "version": 1
  }
}