Marlui Miranda is a Brazilian singer, musician, and researcher known for her performances of indigenous music from the Amazon. She has collaborated with Brazilian musicians Gilberto Gil, Egberto Gismo
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 0x8cd4647d59fa37dd1b9d47c2158615f155bcb179266a86a313ccc97e7ea98dba. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16ef4aae-b516-4f04-872e-92bb8535cdcc.json and https://artists.proofprofile.net/proofs/artist/16ef4aae-b516-4f04-872e-92bb8535cdcc.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 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 0x3feb51ffb0abc38aec5c1d909a2ea513a9bab658679e54f0f4a304cbbc692cde. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/BRWMB0201726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9140f077ba177773b5c8ae03f6f9855a622cfde03ba704a14d039deb832c3e79. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/BRWMB0201732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3b0eaff82189d7c64fd604d255a706f96b364e19ba60cb9a8ce3a2c0fa8629. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/BRWMB0201736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9d83e8566ffdb729a9ba314bd820f6c5f46c588323874071b411f5ca745e01. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEU671702978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9707f540487d0119e9252dc6465517228e58cdef028fbca32b5e57d0f09887d. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/DEU671702979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2d92d7bfc32c54106d8bf559ef055d7cd1a2271a610ec3be3dd4803a769130. 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/BR4PS2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02602a8df6c3087a3b11ea2fae0c026b0e4214172b14a1d2c05fcdf6055ad2c8. 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/BRPBS2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0366c75131ecb42190425c57c81915384de5c3f7247368cff12ee39d8b9f69f5. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/BRPBS2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe434a3adad38f6244302bec1519189d0c8f73de7c229b57ed2a42adf40beec8c. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/BRPBS2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08f9d6dd18c1ddd2b75689091beae9f038e85abe31802710b2804659e2359c2. 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/BRPBS2000013.