Pith Number

pith:P2MQKC65

pith:2021:P2MQKC65OORYXE33WA3CLAIZDB

not attested not anchored not stored refs pending

Did the Event Horizon Telescope Detect the Base of the Sub-Milliarsecond Tubular Jet in M\,87?

Brian Punsly, Sina Chen

arxiv:2111.00692 v1 · 2021-11-01 · astro-ph.GA · 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{P2MQKC65OORYXE33WA3CLAIZDB}

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	2026-07-05T03:32:26.331282Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e99050bdd73a38b937bb0362581191874c0d316220b9027b05ddcaf0e9c9add

Aliases

arxiv: 2111.00692 · arxiv_version: 2111.00692v1 · doi: 10.48550/arxiv.2111.00692 · pith_short_12: P2MQKC65OORY · pith_short_16: P2MQKC65OORYXE33 · pith_short_8: P2MQKC65

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/P2MQKC65OORYXE33WA3CLAIZDB \
  | 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: 7e99050bdd73a38b937bb0362581191874c0d316220b9027b05ddcaf0e9c9add

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1aa3aa1f96c948b918950a60fb1558618c5e2a6b700c84215ed5eda8b01e59f2",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-11-01T04:23:03Z",
    "title_canon_sha256": "33e6b6ef22e299e28bd65ed4cea4d181f94b9a3f502d0e89a8a4fcf1987f5c9f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.00692",
    "kind": "arxiv",
    "version": 1
  }
}