1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75f49bc32d75d5646fe4fbc966dcdfb0146f249ac1012f41a8de32cd227b1eb. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32566eb9-c9fa-4616-a0c0-02a53a158de5.json and https://artists.proofprofile.net/proofs/artist/32566eb9-c9fa-4616-a0c0-02a53a158de5.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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3324535ebc65819ce9466d6d48720b5b8eef01ad8e7ba435725ddc28f841fd95. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BR96K2200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb483e4539af9896890ab7b2ccee50d94a1c8537884b070a69e6ad18d9d284ef. 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/BR96K2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd111c9cce4f3ae8b9f3ff0a198440b03ff81b6ef7274b72f8ebc8d43bb1a1dc9. 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/BR96K2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa450033294da074e7e3f9af4edc86a814c22e2410e586c7cf3d51b743ff5814f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BR96K2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9342e9e319ce72f2a3b526d9d69be555979e34b26e99fd3a004e7fa7f859f6e0. 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/ES7712205405.
Estudo para Improvisação Multitextural No. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd839ad1fed5ede3147cde6fc2e3ebf2b3414241e0ed3730d307d15a58b27ef5f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXMNN2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1874e437b59365adb7e80c9f94422d79f687e4e267cefe1816e5367840473bf3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXJ4C1800005.
Suíte Imaginária para Três Berimbaus Afinados e Dois Violões No.1: Tema e Variação: Vem Jogar Mais Eu
Suíte Imaginária para Três Berimbaus Afinados e Dois Violões No.2: Ilauro de Luanda
Suíte Imaginária para Três Berimbaus Afinados e Dois Violões No.3: Zulu
Suíte Imaginária para Três Berimbaus Afinados e Dois Violões No.4: Pega Esse Nego, Derruba no Chão
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7ed47bc703b2dd412612f9a73a1df3cf919852cc7cf01027db187be598e714. 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/BKT732400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc448e955478df5f32940e1a81b9a79d4c533c9603fc707b9029726676caa0122. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BKT732400003.