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 0x1acbec855543d350652a9cfd571dfdf73e929899f2b7fc5b1eca04f5190e8abe. 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/9c4a0148-2c35-4304-8fbb-a95b4ccb0b70.json and https://artists.proofprofile.net/proofs/artist/9c4a0148-2c35-4304-8fbb-a95b4ccb0b70.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 0xb9eb43f5e09d7c3389d9eb43d3a89a534c1ca91b350a8914843efdc16979abcc. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:46:22Z), 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/QZHZ62090587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b7204f50a69178a2d937b94c76a0bd8f90a56c1abea687668d01953d693a09. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BR2TU1000061.
Burguesinha / Gostava Tanto de Você - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9662b20f40e67a59d5732d989f7fe637258ea1a45049d9fb26977d0a56ff1a4. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZHZ32124402.
Ate o Dia Clarear / Não Diga a Ela a Minha Residência - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39deef872b15bbc078203a3226c2461e7e1e9a0cfb00ffd2b7f7e7308778bdd. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:56:45Z), 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/QZHZ32124401.
Conselho / Será Que É Amor / Doce Refúgio / É D’oxum - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4e4cdb6eb68de5a9ed43d33279112f871f8dd75e9db4a02afe102d58caf0a1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHZ32124405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3ba3e6690a943e6d288e8bc545687ffc2a4b806661ea7f7e49e25b246273da. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:32:29Z), 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/QZ5AB1607470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850e8827e1dd25d3ce234a8063363a114a4636dd27642e5b2b22411dff38898c. 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/BRHVO1200003.
Pensa Bem / Chega Aí / Falando Com os Astros - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87cb030c8ed875ad2ec8e232d1ba087e73f63dda551fe9381f61997591fb7a57. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZ5AB2251758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4e9bdab34abdd47074be1965f5eff2dd4be37c721cb57229916038968c8038. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHZ32227144.
Sambaí 15 Anos: Te Fiz Bem, Blocos 5 e 6
Sambaí 15 Anos: Catundê, Blocos 7 e 8 (Ao Vivo)
Cupido Moderno / Quando Te Olhei / Ilha da Felicidade (Ao Vivo)