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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038067d30e74868177be9b467ecefcda7178a28007cd5fd64c6d6581b82af383. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2224eb0e-33d0-420c-b632-6e6f426af727.json and https://artists.proofprofile.net/proofs/artist/2224eb0e-33d0-420c-b632-6e6f426af727.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78fd411258cdcc5b98c1cded476a2b1c42c0a5c236f17190acc0aca66a8b6db. 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/BRCMP1500582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdce6e99dd932e91bb3ab2339a78b9cfb3319a9e6d0207fd7e8ff4a4f705dbaf. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BRCMP2000068.
Sou Peregrino / Céu Lindo Céu (Playback)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddd6824f8cbaf081b9777a8c7629b6e63d60e97a787a21670b5501cd7aad0b7. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/BC0AE2200008.
O Lado Bom - Tudo Coopera (feat. Anderson Freire, Adilson Freire, Dirceu Freire, Dione Freire, OCabral, Camila, Patrícia Espósito, Gabriela Rodrigues, Aretusa Cardoso, Kate Souza, Pheterson Mayki, Nicolas, Manuela & Vitão Oliveira)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe77f0772250bca4c2dff67ecdbf565595c96f45d022828d81a2ebd5b55431d4. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/BC0AE2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99818811d76d646ac965845dd5ae1be5c4d5f191db6711ee7064f4e00f8d1c71. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:18:58Z), 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/BKCVH2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416421ac30d81cef44f7db1a892a7cb338957d791c587c88ebd39f08e6b2a381. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/BRYA52300219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433d227dfc90cfabfa9119db20b0d27dc8ffb40addb2cfedcecbdb1f08b1aa7e. 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/BRYA52300239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8cb89fdde14f946d9fc6088929b6054e4d4a05f9441f475105def8cc256df1d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BRYA52300220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a21ed0b8f92025168b5dfe13ec867fb5585ae5a85508dfc6a1a1d11e73de94d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BRYA52300287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64530c5db0fd8e770937bf62fedb51bcc929fc17b2b44bdd17bcd7ea5a5f238a. 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/BRMKP1801099.