Rolando Boldrin (22 October 1936 – 9 November 2022) was a Brazilian television presenter, actor, singer, writer and composer. Life and career Born in São Joaquim da Barra, a grandson of Italian immig
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 0x06827fa8041a2998fd9a090fdb44240f4b08e693c554167769dd40a471ccc87b. 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/3eb3cec5-a77b-4870-afa2-3984ef5a163b.json and https://artists.proofprofile.net/proofs/artist/3eb3cec5-a77b-4870-afa2-3984ef5a163b.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 0xb69427fe7195b376e86024d12e248f6cdce80ebc0a23b232f2ea6cc46f4d365e. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/NLRD52420380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41a9d9439e6b6455c90a803549764644c786a6603201654d7eff09147b3640b. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/NLRD52420383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe212f53a42e2d6a7afda3e0c2baf7475fb7bd306c4fdc3f4455082a9cda622e8. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/BRWMB9705961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963a8a4de9fdb5967bd684eace080c25ab1a93a28fa157992f179f08a90f0892. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/BRWMB9802042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1477d918c38afff04d5ed054886047ad798b97ece5693cb8ec3bb919fa0ba486. 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/BRWMB9802043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaaeeadaf4f6b3e64bb46c7da5a18692f18184d318d3ee39afda5ced496c0214. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BRWMB9802048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf455ed4c88d87655af88027de66ba3ba08d7d2777728cac6a2cdf478f3d8e83. 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/BRWMB9802051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a363c3ed5b9929b386ad8a1e4dd614db80d2732846cd38c242eae8dc84f8da. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/BRWMB9700227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3693c4de41ed910f59b3cff813d2fbd86a650ff059ad14541dab28804df5985f. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/BRRGE9801387.
Especial - Canta Raul Torres e João Pacífico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40113f241591715425babfb5fd67751844ad9aba646c1e440550c37fbdc1f473. 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/BRWMB9600243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cf82928bbe90346517e69799c2f22a19b8a36b22b815f3467c3f3999febba9. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/BRWMB0101002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521a0771a287d2af30f8cf198b61f41664d8fad7b6c3fad3e65ce43db619d422. 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/BRWMB9801926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbd8452ae4580c8e0a2c8ea26ade57cbded42459401f566e244df64f4fc8558. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/BRWMB0101003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d92a463223888b8f828f40721a244843048e87eb90690f22f0a069c5873ebde. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/BRWMB9801924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7625207ec7ff0f7b53c74220560e67bd8b846b0239a9463a55fe98b0bd5a53bd. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T13:10:36Z), 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/BRWMB0101004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61b7f9c384587411e423d71c6443f2630ede66291d88e84ead6cf159b6ddecd. 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/BRWMB9801923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732c702e193a71218e9fda47afa3781eaaf3b1bfd7ccd3ec3678f63c7fa28e18. 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/BRWMB0101005.
Cobra venenosa (Participação especial de Rolando Boldrin e José Camillo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69070885e73ef9ae90d7494eda208170c2f70536a966e896cf5298ceeac9b23. 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/BRWMB0300351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156868ef4852b2fcb415e9b3217b779f2efa9f28cabb8ab28ea490d934f6ea73. 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/BRECI1200082.
Caipiríssimo (Clássicos e Jóias da Música Caipira)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dac7082310cafd977664839adae86e69a9b2e8a15d66b28d694b8eec327faaa. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMFMG1358443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748701d97f143a1b9d33d96631de565ac53c617190a5336a1870a5331a7cd879. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BRWMB9801921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03928f4375e2fe2a76f9edbf1726ff648231ed87f46c2fc845dcb06095ce6524. 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/BRWMB9801925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbd8452ae4580c8e0a2c8ea26ade57cbded42459401f566e244df64f4fc8558. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/BRWMB0101003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b35a0b3b155d8661212cb5671a6195eebead6fd234534bef2696773a7b13ceb. 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/BXCNP1800005.
O Samba Está Na Moda (Special Edition) [Ao Vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81627b62aaa7b1ffb566817e540046741d4093c93001487b72b3455f56a42048. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BRPUI2200154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90aed64b371b4ea7b642c3ab26a09c1046266cc1012be47489be9ecd78968ab. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/BRPUI2200155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9644d51875019036c4dd23d8c870ec51b8b251eeb0a6432d0a5a8ac846d9bb68. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/BRPUI2200156.