Cyro Baptista (born December 23, 1950) is a Brazilian-born percussionist in jazz and world music. He creates many of the percussion instruments he plays. Career Born in São Paulo, Brazil, Baptista ar
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 0x12db47c4afa28f3319f8e567547b562ec19dab3cee900e8b3569470f017ccfa6. Chain 2 (Bitcoin): anchored in block 953614 (2026-06-14T08:40:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/186387df-1d6e-4239-9b38-1458f19c8469.json and https://artists.proofprofile.net/proofs/artist/186387df-1d6e-4239-9b38-1458f19c8469.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 0xd5f4fbc2ef7b054ee991de44db455a74e7b226b6ea8c761ba3e5059c41135c9c. 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/USSM10302461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cc7222465b33a2b44c5d3275722071fdfaeaba9df1ea02df58e388d737badc. 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/USSM10314917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3daf193505752c11859a76b7419585cb5ce400524f267909fc1bc7cf06ef4af2. 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/USSM19400290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f4fbc2ef7b054ee991de44db455a74e7b226b6ea8c761ba3e5059c41135c9c. 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/USSM10302461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb182257a8666c127f834745205666af758caca8b50a99006183b181c48111157. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USSM10313247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cc7222465b33a2b44c5d3275722071fdfaeaba9df1ea02df58e388d737badc. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/USSM10314917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2395aa490b08508825c6685d1e80f0872c476a019201794138a9b639927b0e. 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/USSM10302474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4168e885f8b2c97e286819581dea693562a1d619f11359e26b0c4983e8e022aa. 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/USSM19909918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4148e2f7f1a7be10f0d756654e4ab6ade4518d3b9391ba902d76cd775092b2f0. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USSM19504454.
Melodia Sentimental (Sentimental Melody) (from Forest of the Amazon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0385b6afab6ba8093fd9ffcd5df70f6ebc282f1ea38ea9d26a5737337ca148. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USSM19504455.
Del Cabello Más Sutil (The Softest Hair)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbd343d5acd6b802dd9d67ea0b10a11ef421b6d0755b0d50539d487e9687959. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USSM19504460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbc1b7f80822b3131ff8d66909a46e586386b276b661d2cd6a6c8e0aa8ea20f. 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/USSM19504457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9305b24c15a65c587a8656ac6751d043a9e307fca49f87b7b2c1c9a2272bf08. 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/USSM19504456.
The Essential Latin American Composers Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c35c4d965f9f692b6d88d38101ed8e6573605dde024f511dd2fb2c224e6cef4. 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/USX760812313.