Mercer Ellington
type: MusicGroup
genre: big band
genre: jazz
description: Mercer Kennedy Ellington (March 11, 1919 – February 8, 1996) was an American musician, composer, and arranger. His father was Duke Ellington, whose band Mercer led for 20 years after his father's deat
popularity: 13
followers: 416
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8a5debf389e65dcdab885c1a9ebd2b4798835bba3a13d016469fb2b220ac6d62
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953746
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953746
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a4b2c375-d5a7-4a5f-9754-f94f0f0c76c7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a4b2c375-d5a7-4a5f-9754-f94f0f0c76c7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a4b2c375-d5a7-4a5f-9754-f94f0f0c76c7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T05:25:34Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8a5debf389e65dcdab885c1a9ebd2b4798835bba3a13d016469fb2b220ac6d62","name":"Mercer Ellington","registered_at":"2026-06-14T21:43:08Z","symbol":"NIM0585310","token_address":"0x7f297e4977d08ed5d3bcd72b1c5b15a223d67c3e","type":"artist","uuid":"a4b2c375-d5a7-4a5f-9754-f94f0f0c76c7"}
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 0x8a5debf389e65dcdab885c1a9ebd2b4798835bba3a13d016469fb2b220ac6d62. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a4b2c375-d5a7-4a5f-9754-f94f0f0c76c7.json and https://artists.proofprofile.net/proofs/artist/a4b2c375-d5a7-4a5f-9754-f94f0f0c76c7.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-15T05:25:34Z
  text: {"copyright_id":"0x8a5debf389e65dcdab885c1a9ebd2b4798835bba3a13d016469fb2b220ac6d62","name":"Mercer Ellington","registered_at":"2026-06-14T21:43:08Z","symbol":"NIM0585310","token_address":"0x7f297e4977d08ed5d3bcd72b1c5b15a223d67c3e","type":"artist","uuid":"a4b2c375-d5a7-4a5f-9754-f94f0f0c76c7"}
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  type: MusicAlbum
  date published: 1987-01-01
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  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
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