Pith Number

pith:HZQ7K7GA

pith:2016:HZQ7K7GAZCQKOBGIFEM2RVIB3J

not attested not anchored not stored refs pending

Kinematic restrictions on particle collisions near extremal black holes: A unified picture

Filip Hejda, Ji\v{r}\'i Bi\v{c}\'ak

arxiv:1612.04959 v2 · 2016-12-15 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HZQ7K7GAZCQKOBGIFEM2RVIB3J}

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	2026-05-18T00:44:45.771195Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3e61f57cc0c8a0a704c82919a8d501da6f419891431e43d1d1b2d08f3d4cac87

Aliases

arxiv: 1612.04959 · arxiv_version: 1612.04959v2 · doi: 10.48550/arxiv.1612.04959 · pith_short_12: HZQ7K7GAZCQK · pith_short_16: HZQ7K7GAZCQKOBGI · pith_short_8: HZQ7K7GA

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/HZQ7K7GAZCQKOBGIFEM2RVIB3J \
  | 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: 3e61f57cc0c8a0a704c82919a8d501da6f419891431e43d1d1b2d08f3d4cac87

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c02471b11ad983ee85b19d692c5240c9c7bcb64c8ad2086708c81a1c6433633",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2016-12-15T08:04:11Z",
    "title_canon_sha256": "67a9794c11422938396e6c065f416e604fe18d0df6e56b9b9739b36a2aef9180"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.04959",
    "kind": "arxiv",
    "version": 2
  }
}