Rosa Maria, known by her stage name, Rosinha, is a Portuguese Pimba singer, songwriter and accordion player. Biography Rosa was born in 1971 in Montijo, Portugal and grew up in the parish of Santo Is
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 0x6f63f5aa47aa6f5662159c5eee8c574bad923abd10a6e4c2de6acd8b6274237b. 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/c67a4a5c-85f2-4c34-a14b-b0848c5ae89a.json and https://artists.proofprofile.net/proofs/artist/c67a4a5c-85f2-4c34-a14b-b0848c5ae89a.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 0x1ea228835549dcc0bfa47925eb186aaffb209b304882c98053792f06a79098e3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USA371087893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06ac1c731253b271794124fcb60a860f74f7a2d641c025161b6a2ebba96192e. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:40:32Z), 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/PTVI11300377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d48c28a8752830e2edc0a907621fabae2ceda702576db2ff1c16b4040f435fc. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/PTVI10900274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf528c3da61b85104d2382f969f402d534485df18b4fb6157916d19bac4232301. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:02:29Z), 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/PTVI10900275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2975ff912d093dbaf6616f89dc3f1418a897bb36861783cbf98546607b94b9a0. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/PTVI10900276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275975b761e044967dfdd52329a69913667009104070e11c985731c0a6820be8. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:54:42Z), 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/PTVI10900281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0780ad339910462a9e9232b955eef8be7dc71aa68aa4d34700861be1877d9993. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:19:46Z), 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/PTVI11500110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb1da68e90dce46fe01c33c57a7b79ffc83326c61a896eb31870fb2862c66a1. 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/FR2X41961519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6d0735b9b1af74c732d0ed52fdd302f8c34262aa1cc2471ccbd08b28d632c9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR2X41961517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab2b788232a4d2449d3c4bb47931042a4a5c7dfa8a6b1dc038ceb57809e15dd. 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/FR2X41961518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3512392084b858920245f4b592705373ac4cf82fc6d6ba0dc484a050a220d6f5. 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/FR2X41961520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736df723d094f632bb9fcd97a9a8cf7fd5cbd89dd4f7880eb629b5a2066baf29. 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/FR2X41961525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a985232b21856193eac895b523ee5e63c7c04eb70d09a86f1905d9ccd687be. 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/PT2EO2000220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19780880ac11b46c0767bdd7d37c31395bb4e2961372dbedd98aca69707381dd. 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/PT2EO2000222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcaca4d2c80efce10dea23c0d2d94c785e17a6e582dd3c0c98c7f553c275a76. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:56:29Z), 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/PT2EO2200225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3961833333d1daf1546b2e0ec96276977d749450284316699143484d252fe0a8. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/PT2EO2300245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca979260ff122d90ef1740639acd2aa2775c7bb28c60f85dc0920f6adec6184. 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/PT2EO2400292.
Grande Ou Pequena - Desde Que Me Aguente em Cima Dela
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f33a7be42b69b36aca784f8f29828b7090b9f68c3c2b1eb29ff1b695513636. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/PT2EO2400293.
Ele Gosta Do Que Tenho No Meio Das Pernas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861979c9a4d49dbbbcca5ad4bad94d2b5c791ada94c239020750f47fbd18c503. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/PT2EO2500418.