Marvin Powell
type: MusicGroup
genre: indie folk
description: Marvin Powell Jr. (August 30, 1955 – September 30, 2022) was an American professional football player who was an offensive tackle in the National Football League (NFL) for the New York Jets and Tampa
popularity: 2
followers: 639
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0c54a0e73489b7a6e245e1754f6e4deb9a416e3f19082137a748fb40d2ed5f6d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953941
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953941
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/21380475-3dd2-4eef-b62f-a3783fa98c4d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/21380475-3dd2-4eef-b62f-a3783fa98c4d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/21380475-3dd2-4eef-b62f-a3783fa98c4d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T11:51:19Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0c54a0e73489b7a6e245e1754f6e4deb9a416e3f19082137a748fb40d2ed5f6d","name":"Marvin Powell","registered_at":"2026-06-16T01:06:10Z","symbol":"NIM0889166","token_address":"0x8e63c86cd0c53e30d55c2be0aada239c05d3d84e","type":"artist","uuid":"21380475-3dd2-4eef-b62f-a3783fa98c4d"}
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 0x0c54a0e73489b7a6e245e1754f6e4deb9a416e3f19082137a748fb40d2ed5f6d. Chain 2 (Bitcoin): anchored in block 953943 (2026-06-16T11:59:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/21380475-3dd2-4eef-b62f-a3783fa98c4d.json and https://artists.proofprofile.net/proofs/artist/21380475-3dd2-4eef-b62f-a3783fa98c4d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T11:59:32Z
  text: {"copyright_id":"0x0c54a0e73489b7a6e245e1754f6e4deb9a416e3f19082137a748fb40d2ed5f6d","name":"Marvin Powell","registered_at":"2026-06-16T01:06:10Z","symbol":"NIM0889166","token_address":"0x8e63c86cd0c53e30d55c2be0aada239c05d3d84e","type":"artist","uuid":"21380475-3dd2-4eef-b62f-a3783fa98c4d"}
album: Buried
  type: MusicAlbum
  date published: 2016-11-11
album: Salt
  type: MusicAlbum
  date published: 2017-03-20
album: Salt
  type: MusicAlbum
  date published: 2017-03-20
album: Wind Before the Train
  type: MusicAlbum
  date published: 2017-08-22
album: Wind Before the Train
  type: MusicAlbum
  date published: 2017-08-22
album: Opulent Heart
  type: MusicAlbum
  date published: 2018-05-04
album: Samsara
  type: MusicAlbum
  date published: 2019-03-29
album: Dust of the Day
  type: MusicAlbum
  date published: 2019-09-13
album: Don't Want Nothing
  type: MusicAlbum
  date published: 2022-11-24
album: Cracking
  type: MusicAlbum
  date published: 2022-12-16
album: Careless By The Coast
  type: MusicAlbum
  date published: 2023-01-27