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 0xe86b4c1172484d4365a39bebf6910bffd83813b847277d40af854433699c1dc2. 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/7d79dc01-6389-4ff4-acf0-606c09003ab3.json and https://artists.proofprofile.net/proofs/artist/7d79dc01-6389-4ff4-acf0-606c09003ab3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
O Preto Do Bairro I (Projeto Monstro Beats)
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 0x8d9d04aca1a7f7c59996d11b6e4877c754cc060811f143eb3ac23327693efb67. 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/QZK6F2080422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ce71caa025ac354e119eb2ff38444edbac670e7c5dad62a03d4b6fb8be80cc. 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/QZK6F2080423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe884ed8774dfce7e8c1bdb8f954461e6bc00fc610dbc21f985068fda5e06a018. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:44Z), 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/QZK6Q2149422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88916354a96d1d0413c155a61dcea80e0104476c1d86f66392a7dc6dc8798046. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZK6H2175230.
Rap do Flamengo (Campeão da Libertadores)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458de7b03e3cf2ec19a2e091db0680700749c344d17b1cbdcbbbf0e158aa8bbf. 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/QZMEM2119894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5eff6f5f2a637fa0340970c4602c37f9c902cfaaeee45224841a71bd13a90d0. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:54:31Z), 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/QZMEP2192202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0670bd9d5035dc000d1155c842a30cfc45dd15f57a7f630861ce4bbab7c699f7. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:38:52Z), 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/QZMEP2192205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57de91c5873b97d541379a772918762220fe6cf19c4d837f71b14749cd375ef0. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QZMEP2192206.
Rap do Cruzeiro (Campeão da Copa do Brasil)
Rap do Cristiano Ronaldo (Copa do Mundo)