MPR may refer to: Medicine The MMR vaccine, from Latin morbilli (measles), parotitis (mumps) and rubella Mannose 6-phosphate receptor, a family of transmembrane proteins that help transport prote
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3f85f3960771af93f24a9c56b100e84414b3fdb5ead019cc94c740f3d513fa. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/162489c0-7977-40f7-9ce9-13b7b16f9b29.json and https://artists.proofprofile.net/proofs/artist/162489c0-7977-40f7-9ce9-13b7b16f9b29.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Semeki (Mbala boni bako benga yo semeki)
Ecm (Musique populaire de la révolution)
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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8a111a30ceb4a14848ab92ee3d3e6ab6932ff6553d84668ee5f4d6ab49c5ab. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX202241878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6048b2b843f78805f8fccbd20e7fcba4c725898100c6df33eaac644ac69b136. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/FR59R2251900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c4ba3076f052826e4750362d3912e854264e2a848504e5c58c0b8bd9cd4762. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/FRX202241879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99dea008c2aaabb7dc4e2fc70f71743ebb47af6b98b2e239ccba1c4ffbd0717. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FRX282249936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c429bf4d3bb098b92d0f94cd060b2186a998ba7ee977360ee9d16ae9ee1d3e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FRX282249937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84e7f78f8c2fae4489ec6b284545fac431634c56ff29ec6b8ae66ffd7dab7b3. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRX282249938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cbdace406b9b6d4e4b12508f483e5768d348cf22b7fd5d57c5a99f678f3721. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX282249940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60563a058e3bff5c1fd9fb7df8fe05a957c58a47ea811c41ac8f7bd5e207c6ef. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/FRX282249941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9788e15d6a4a768b7e754ab4f23671ae03ab96926cf7b7655d2ac6a0bfab6bbe. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/FRX282249944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84e7f78f8c2fae4489ec6b284545fac431634c56ff29ec6b8ae66ffd7dab7b3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX282249938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207e2da12301139c7fd3c20a1392823189df10d8d83e25268b69404236a60e9c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA052326016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5350dc19ba7e0ef6401d83b9e4839f34d94d51daa9ad94065c5a757584d56e3e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DGA0P2320685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86b831b94e1124965bd685047a6a736fc770223e031649b1210252b5eaa44f3. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/DGA0L2393918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6121436682c9e7e6d9ccd52bd7b785e7ad68f5d6586019a0f155add9bb69ab8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA0L2499235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd83d8c1e9ca2e0a64822f40e0f0cd31b8027d5b206bd2bbafc549587173671d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DGA0L2499236.