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 0x28f652a2c595815d705f92a6408a3c768117fc742412d36c74b784e5b2a8dffc. 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/8e64e90a-cb84-4f92-b896-d98f26ab99ae.json and https://artists.proofprofile.net/proofs/artist/8e64e90a-cb84-4f92-b896-d98f26ab99ae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Do Ré Mi Fon Fon - 27 Brazilian Nursery Rhymes
Do Re Mi Fon Fon - 27 Brazilian Nursery Rhymes
Ecomúsica: Conversas de um Piano Com a Fauna Brasileira
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 0x12e63fba3c134889440b29231ff21841ba6779ffeec15359009d4e7097024cb3. 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/BRARP2300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f456109c7101560213bf066c509aaeb16ffe3160a4a807f37e441ae1b8a26e6. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/BRARP2300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19f661e2fafe19adf1bd500c081483f68a84d928a4250cae9eae5d7fbeb09b6. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/BRARP2300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93e45161532a7b0f2416aa480eb60b6062af19ba8c48d3ab059945066a89ad2. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/BRARP2300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5becca3f66df58698fc14d73cd28a5a130dd31082f66e005466bc8018dbed6f. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/BRARP2300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994ab9d694eed0c4a97fec5712a0512c793734f37d0589e27a3a46518292fbb8. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/BRARP2300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b3254d1ae390d654d0da9a475ab96d5415fe977df30831e55f3dee54e95d54. 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/BREFU1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6870eeadbde188436486cee21cf8769e01319ae30035e6cedaf0c8ae0e814ab. 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/BREFU1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7d7307c25a2df00c82dfc3f23376f7e7f20d88e57512f0de645f06e0cb5f63. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/BREFU1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b93908ad0801a3d7ee0343d7da68d2c9a2af3e9e4c75b063191055740cb8115. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/BREFU1700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d76377042cc98c4d49f0af050141058169c6fa5680404dc5d5dfccee808d3b1. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/BREFU1700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5afca981b006b91dd5ab4b0e9c37b8c9dbbdb38319b60292511b2368b68eda2. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/BREFU1700018.
The Wings Suite, Op. 16, No. 8: Sabiá, Saudade Do Brasil
The Wings Suite, Op. 16, No. 5: Quero-quero
The Wings Suite, Op. 16, No. 6: Tangará (Arr. for Orchestra by Rodrigo Morte)
The Wings Suite, Op. 16, No. 3: Araras (Arr. for Orchestra by Rodrigo Morte)
The Wings Suite, Op. 16, No. 4: Harpia (Arr. for Orchestra by Rodrigo Morte)
Theme for Tom Jobim: Variation XIV, Dancing
Theme for Tom Jobim: Variation VIII, Wave
The Wings Suite, Op. 16, No. 3: Araras (Piano Version)
The Wings Suite, Op. 16, No. 4: Harpia - Bonus Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6b2f8ef2eaea48b2e8afeb98bb9c26d9d21f680c91112f5452bec78fc2e39b. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/BRARP2400147.
Domingo no Parque (Arr. for Two Pianos by Marco Bernardo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3351123b3006dd8fc2d6c39267a643bd197ae49d21493950b89a67aa3c97d5c. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/BRARP2500426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d95df5d7cea10ca0bbe3c8c515c226209267585dba3328b92eba5668584e710. 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/JPB641800094.