Mackie may refer to: Organizations Mackie (company), American manufacturer of professional audio equipment Mackie International, a textile machinery engineering plant and foundry in Northern Ireland
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c29f64395e9750ce572ecaf17224eabcb5202f0fdbc3bace8eec1e07d90fdd. 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/dd7b174f-2c22-453c-b5ff-025ec317264d.json and https://artists.proofprofile.net/proofs/artist/dd7b174f-2c22-453c-b5ff-025ec317264d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa4fcc2b0d44a6a997d4a9cfd8af9c150cae6c961f9a00d1b5ff281e935e8dc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTPX2276418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6810e8868317ebb09aeefbe255dcefa4afb7763464499d83a249ab4763bd26. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM72100510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aaf8a4f51242eb476920b7f5464dcf731ebd732653c6f79f6f9e9436ee64dff. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:55:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ92002303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15480c9cff16641802df676e927f00331772d6d69c5bf5064fa9a1010f5ca51a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA560958404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa4fcc2b0d44a6a997d4a9cfd8af9c150cae6c961f9a00d1b5ff281e935e8dc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTPX2276418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aaf8a4f51242eb476920b7f5464dcf731ebd732653c6f79f6f9e9436ee64dff. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ92002303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7020eba1f1a6a62eddd4ca629b7cc8c6872e04abd3f34873227a3ef0358068e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADJ1728078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aaf8a4f51242eb476920b7f5464dcf731ebd732653c6f79f6f9e9436ee64dff. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ92002303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fe7a084302f95496d65dab6d4d3012273bad4840150535c246d601ca0c55c8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACG1559929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fe5c67b8bedb3da78754d132396ae7514e07b58e964a4f25418dfcdc9ddfc7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMD331300015.