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 0x90e57a59f34f807705f669e0772134357b9a568caa77c6dd688a904c5fb7deb6. Chain 2 (Bitcoin): anchored in block 953636 (2026-06-14T13:03:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3822310c-0a91-4e39-93da-e00207b7c258.json and https://artists.proofprofile.net/proofs/artist/3822310c-0a91-4e39-93da-e00207b7c258.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rei do Gado: Solos de Viola Caipira (20 Sucessos)
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 0xcfaab1cfe4155497e0fd40157e8846ce282e73d3fe871fb5a8676106caf94c5d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/BRMVP0500297.
Solos de Viola Caipira: O Violeiro Mais Sertanejo do Brasil
Solos De Viola Caipira: O Violeiro Mais Sertanejo do Brasil
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd1fe92310394daf1164b90298dca4e11f17e31fd5c9bfe3f4b01fca678b039. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/BRMVP0401009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefcaa581d923b2fc0061b1861438a1fa9c95affa3c33135a1a8366c7ffbe4b8c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRMVP0401010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ecff0ba7a76980e5f4f892e6c7b805c46e5fad1c8466e73745bbd9706e53a6. 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/BRMVP0401013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fca860f0268606b8a65548202c96e04132fa7d94f9d56bb51deaec091e998a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/BRMVP0401014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9332e37616a038e2fe3c471dc5a0c2df2f9e8612d071024f9e56e29c32a29314. 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/BRMVP0401026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b02c5521a4ea5ccd153f71f517c8d62a10a2bcca50e2df57a2bb9017ed7525. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BRMVP0401027.
O Violeiro Mais Sertanejo Do Brasil: Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9197d58ef4f36e8e26ff824ebe0165d4d3a54e29f0a16309f9a3eaa248872b69. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/BRMVP0201409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c4a46da6a3fa8b8120d9a7b267360d444eed06af41725985a167701e32df8f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/BRMVP0201411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a689969d69183c8e4e26d3fac2934e1dfd973d77222f74f5615f73eef71db1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRMVP0201414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f90bf00f71f133925af23b3386883f6515412aa84a0441d99d128cd59b5d32. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/BRMVP0201415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0ab480cb156269be2ec66d00ef1db6978601a092832a081066121fa597b739. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/BRMVP0201417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7d40f3470c80148c88fcc290dd4c9408cb933e53b922b6223366a8dc53e753. 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/BRMVP0201418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e2bdffbbd6f363142c40fb440b9e2a1a8f4ce80e683e633caaf85383732d35. 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/BRMVP0201419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983806935c22f833fcdcac4d37ad57b990632fd337adcb319daf02ce27e3e73a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRMVP0201421.
20 Sucessos: O Violeiro Mais Sertanejo do Brasil, Vol. 3
O Violeiro Mais Sertanejo do Brasil, Vol. 2
O Violeiro Mais Sertanejo do Brasil: Vol. 2
O Violeiro Mais Sertanejo do Brasil, Vol. 1
O Violeiro Mias Sertanejo do Brasil: Vol. 1
O Violeiro Mais Sertanejo Do Brasil: Vol. 4
O Violeiro Mais Sertanejo do Brasil, Vol. 4
Acoustic Guitar & Viola Caipira, Vol. 15
Acoustic Guitar and Viola Caipira, Vol.11