Alvin Brown
type: MusicGroup
genre: zouk
description: Alvin Brown (born December 15, 1961) is an American politician from Florida who served as mayor of Jacksonville, from 2011 to 2015. A member of the Democratic Party, was the first African American to
popularity: 10
followers: 13
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdbf973d06db1778d20d73097f27c34a008e68650d51cc345adb6f6e0ba955919
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954015
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954015
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/356709cc-d43c-45ec-a820-a760cacc6ff6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/356709cc-d43c-45ec-a820-a760cacc6ff6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/356709cc-d43c-45ec-a820-a760cacc6ff6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T22:55:46Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdbf973d06db1778d20d73097f27c34a008e68650d51cc345adb6f6e0ba955919","name":"Alvin Brown","registered_at":"2026-06-16T08:12:19Z","symbol":"NIM0990960","token_address":"0x9ea9f69bb9f9f4249172c705682d7874dd778791","type":"artist","uuid":"356709cc-d43c-45ec-a820-a760cacc6ff6"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf973d06db1778d20d73097f27c34a008e68650d51cc345adb6f6e0ba955919. Chain 2 (Bitcoin): anchored in block 954015 (2026-06-16T22:55:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/356709cc-d43c-45ec-a820-a760cacc6ff6.json and https://artists.proofprofile.net/proofs/artist/356709cc-d43c-45ec-a820-a760cacc6ff6.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T22:55:46Z
  text: {"copyright_id":"0xdbf973d06db1778d20d73097f27c34a008e68650d51cc345adb6f6e0ba955919","name":"Alvin Brown","registered_at":"2026-06-16T08:12:19Z","symbol":"NIM0990960","token_address":"0x9ea9f69bb9f9f4249172c705682d7874dd778791","type":"artist","uuid":"356709cc-d43c-45ec-a820-a760cacc6ff6"}