Brownie Mary
type: MusicGroup
description: Mary Jane Rathbun (December 22, 1922 – April 10, 1999), popularly known as Brownie Mary, was an American medical cannabis rights activist. As a hospital volunteer at San Francisco General Hospital, s
popularity: 2
followers: 439
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd49b78c5254357ee3e8f22eaf9017a4dc079327f73aa1abeb00a7f9998b0a936
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/895b900a-e10d-4efe-baf3-c5c91bfb9b70.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/895b900a-e10d-4efe-baf3-c5c91bfb9b70.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/895b900a-e10d-4efe-baf3-c5c91bfb9b70
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd49b78c5254357ee3e8f22eaf9017a4dc079327f73aa1abeb00a7f9998b0a936","name":"Brownie Mary","registered_at":"2026-06-17T13:55:51Z","symbol":"NIM1416351","token_address":"0x7b1ce7d9dced9ed971683f7d307e10aeff557ada","type":"artist","uuid":"895b900a-e10d-4efe-baf3-c5c91bfb9b70"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49b78c5254357ee3e8f22eaf9017a4dc079327f73aa1abeb00a7f9998b0a936. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/895b900a-e10d-4efe-baf3-c5c91bfb9b70.json and https://artists.proofprofile.net/proofs/artist/895b900a-e10d-4efe-baf3-c5c91bfb9b70.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xd49b78c5254357ee3e8f22eaf9017a4dc079327f73aa1abeb00a7f9998b0a936","name":"Brownie Mary","registered_at":"2026-06-17T13:55:51Z","symbol":"NIM1416351","token_address":"0x7b1ce7d9dced9ed971683f7d307e10aeff557ada","type":"artist","uuid":"895b900a-e10d-4efe-baf3-c5c91bfb9b70"}
album: Naked
  type: MusicAlbum
  date published: 1998