Mississippi Mass Choir
type: MusicGroup
genre: gospel
genre: worship
description: The Mississippi Mass Choir is an American gospel choir based in Jackson, Mississippi. thumb|Mississippi Mass Choir Musical career After wrestling with the idea of forming a mass choir, Frank Williams
popularity: 40
followers: 195001
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x1a09a6c90e99582887f2a811f8510f44d8069cd20fd404d7c2cc73edbc61a2d1
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/87e60436-4386-4012-8b58-e74d25f05b04.ots
additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/artist/87e60436-4386-4012-8b58-e74d25f05b04.json
additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
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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 0x1a09a6c90e99582887f2a811f8510f44d8069cd20fd404d7c2cc73edbc61a2d1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87e60436-4386-4012-8b58-e74d25f05b04.json and https://artists.proofprofile.net/proofs/artist/87e60436-4386-4012-8b58-e74d25f05b04.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
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album: Emmanuel (God With Us)
  type: MusicAlbum
  date published: 1999-07-27