Pith Number

pith:UQU2F5WN

pith:2017:UQU2F5WNFBYLPAWQNVP7U3MXLV

not attested not anchored not stored refs pending

The immediate environment of an astrophysical black hole

Ioannis Contopoulos

arxiv:1711.00302 v2 · 2017-11-01 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UQU2F5WNFBYLPAWQNVP7U3MXLV}

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	2026-05-18T00:27:42.004376Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a429a2f6cd2870b782d06d5ffa6d975d6bee0c0131bc2cf55786f03b140c9ba2

Aliases

arxiv: 1711.00302 · arxiv_version: 1711.00302v2 · doi: 10.48550/arxiv.1711.00302 · pith_short_12: UQU2F5WNFBYL · pith_short_16: UQU2F5WNFBYLPAWQ · pith_short_8: UQU2F5WN

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/UQU2F5WNFBYLPAWQNVP7U3MXLV \
  | 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: a429a2f6cd2870b782d06d5ffa6d975d6bee0c0131bc2cf55786f03b140c9ba2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c5a9a9a039df4d4f7c67433a2907bc60301cdd6e2df326a5fd9b4b83f7814eb3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2017-11-01T12:03:06Z",
    "title_canon_sha256": "6efc1d2f447578b54f06f516420dee1cfa488bb57b979fcf140d314e9070fac3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.00302",
    "kind": "arxiv",
    "version": 2
  }
}