Pith Number

pith:TCYWVPXD

pith:2021:TCYWVPXD4NX3ZII7BL3J5DDUGU

not attested not anchored not stored refs pending

Multi-wavelength Observations of Sgr A*. I. 2019 July 18

Devaky Kunneriath, Farhad Yusef-Zadeh, Joseph M. Michail, Mark Wardle

arxiv:2107.09681 v3 · 2021-07-20 · astro-ph.HE · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TCYWVPXD4NX3ZII7BL3J5DDUGU}

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	2026-07-05T03:42:44.515765Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

98b16abee3e36fbca11f0af69e8c74352bb1bbca63e5948ec6269038e9b7671f

Aliases

arxiv: 2107.09681 · arxiv_version: 2107.09681v3 · doi: 10.48550/arxiv.2107.09681 · pith_short_12: TCYWVPXD4NX3 · pith_short_16: TCYWVPXD4NX3ZII7 · pith_short_8: TCYWVPXD

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/TCYWVPXD4NX3ZII7BL3J5DDUGU \
  | 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: 98b16abee3e36fbca11f0af69e8c74352bb1bbca63e5948ec6269038e9b7671f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6870654adf4faab79d80db7edf32629c9084c6c557b6b9da90cf3711282c4b41",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-07-20T18:00:03Z",
    "title_canon_sha256": "761b590da3ac8222ff1470ef7d324a2ef789dad10bfbef55ce90876899ec817c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.09681",
    "kind": "arxiv",
    "version": 3
  }
}