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 0x4497e0422d608adf9c36c62b5976192539ecd0617106d146b4e4d6914ab8b085. 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/3ca72ca5-e090-4359-a517-8571b8b44b6f.json and https://artists.proofprofile.net/proofs/artist/3ca72ca5-e090-4359-a517-8571b8b44b6f.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 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 0x64faded1f6cfbd2e69a861e0e41212c850c2b38dd769cd27e28c65157c280bc0. 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/QZNJY2472471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f25a96286f1e6dbaeb74a753425216329bbd5f5ca653ae3b945fb1dfb8ea13. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZGLM2535388.
Ultra Magrão - Quando Ela Bebi, Ela Fica Maluca
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9cbe76c60d740e7d5b53950e920d505f6f9594063e26ddb0c519a50cbfe579. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US7VG2599718.
Vem Sentar pro Chefe no Som do Proibidão
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c67aaae8e9f1183557b61f31407be86073abe7e50cce13cd707dc87edb709a5. 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/BX4IU2422204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5ef43b0ed7a904ad5c36cf2dd633c23e97bbbe084744716d78d1aa83a260a6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BX4KA2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a73167b114d49c3df03b2eb9c900ccd22fb1ea23a7a8e1b1e0fab3452304557. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFYX2581443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50dcc50d604b9931066f3aad3b062f210e15b3f035c1e044a7e64ebbb6b4539a. 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/BCM9A2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d60c554716bd9da1ddab5d0cb89721c898523929152b4f33f89382e4ffd27ba. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRT3O1200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df1b554caa107cc42401c9af935fb58a7e19c2aa70efe7313e65ebc2800570a. 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/QZW9L2308257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8925d3975dde27de7f166d56a4e99bf927eb9337174a540d1a807577945099ad. 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/BRT3O1100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9ccf39092dadb3bc5dc018b19c3ce32c5929507d6dbec32e4b3ca7d336552d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXHBP1900370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b1d62868c9f7b4d83ef4f9a32601d94885c0bda9a72833266e954b098990eb. 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/BXHBP1900371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe93964e9f10c3f70435d5ca74e49d58f2e9d18ae67c9d0d3fa353979cfd80e2. 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/QZ5AB1609784.
Baile do Dennis (Ao Vivo) [Deluxe Edition]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc055e035e15e9f3b77d39070b6e356d4d365da3f175f51bef1c4cc190d14744b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BRT3O1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f3389b812d1b5c24ff04164aab77ada74a281bad796d24bc87fbb6a203eb4e. 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/QZNJW2404080.