Airto Guimorvan Moreira (born August 5, 1941) is a Brazilian jazz drummer, composer and percussionist. He is married to jazz singer Flora Purim, and their daughter Diana Moreira is also a singer. Comi
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 0x9573f3f29cef15e12773ace8ee8738515b9fe9e3ef9800cac94227c763a6e6e0. 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/e6d9018a-d07f-4ca9-840a-2dadad436924.json and https://artists.proofprofile.net/proofs/artist/e6d9018a-d07f-4ca9-840a-2dadad436924.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 0x606796022850545923c9f5c0c07d99951731aa7c84f2f806e9ae01d775fe9eee. 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/USAR10301358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f162e71f1f4b691d50eadbf10d1b374e6a71608ca3516971004a6e6ca0f053b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/USWB10202085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a95c347bc9c9dfc557da425ba16694b3d1b608bd0f121abbf3f620f005fd6bd. 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/BRWMB9806289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02aa00f4ec252189e6342f000ad6acdb09836d1edb16915e6917f060cfe431aa. 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/DEC828800105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802a1cbbf40c1db1973fb93b7f86cee4735c92b03eecb4dec05f25819816c612. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USNA10319866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d74119c180db3498b9da9aa8ea2b50f48d703ced16ca06e8dc20ada45d46fb4. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USFKZ0610038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7235071e668b5a93dc2406de05eec4a42a6b138a36de4542a98f6f8b42777a70. 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/ITD561000360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150c37bbb5aa1ff014c83d8a5a52263a7c4db6116c20fde44ecd98ef42ac54ce. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/FRX451599253.
O Galho Da Roseira (The Branches Of The Rose Tree)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfea901546a04deec1a8f05a7bfb191344808731e92d7f57b2a7a431a85f75c. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBCLQ2100389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b3d8977106ec3cb85b045d345db622ba5b75759cd65d11d9e911c240c7e498. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DGA0H2491931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8cb41bb6d567490dc1ccc28fa7947c9037a9e43f887fbfb0d6993d29d1b7b4. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USWH19701200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4f0bde2ee14b8c2102a3ece96c72f4a3953cf6d81ea225ba3e14ba1c670d8a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BRMCA7000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4afa9733b328d6eb86a2ff2ade1afd99c6ff1cd89b5388efef34956b8271d85. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BRMCA7000106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48403215af964b496752e0f5389d74e857332a5b2721951c7341b078f803bb4a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRMCA7000108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e7ea4f616ae7ae9cd1b24d8b2f57217fb7ccacffcace43bac1e8ca8b53b1dc. 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/BRMCA7000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5115354f2c6a98168b83d4c44f2096b1bffa41682f5af0aef3353137708d6f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BRMCA7000111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0641dae069eacd75c1391349e117aad83aa8bf5b608e8c4ce2528ca61293ea9d. 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/BRMCA7000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684ff1014167c4057793208e740c9c7cc9b6dab3e89dc41ba0317850efffb516. 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/BRMCA7000113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234ca10f75c308410f85551b8a8ab94d1a283b3454e49e0b43f55d662c9a09b4. 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/BRMCA7000114.