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 0xf1972e600fece97418677f973afc6f3fd951a16b6c7672be24c7c498ea81b27c. 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/c03a5b55-b195-4ee1-99eb-be56341a92f9.json and https://artists.proofprofile.net/proofs/artist/c03a5b55-b195-4ee1-99eb-be56341a92f9.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 0x6cc584b6c451115ec73322af346cfac688c8f23950f37ef355a7be9c5d830217. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BR7Y91800005.
Dono do Tempo (feat. Sandro Nazireu) [Playback]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc376d7a691dfebb93b3baa29c8649305bd753063200ebd75f77d4e92f45634. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:35:59Z), 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/BR7Y91900001.
Irresistível (feat. Mariana Valadão) [Playback]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2ba58094872c0b412a157dcd6ed06bb939faf17e62acccc89a489b31cf529d. 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/BR7Y92000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2f1e87ac0c57331c771c44e9c222157d5c0ad54b8fa9b353d8051a7793ae53. 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/BR7Y92000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960f03e2950a745365a568186a316ce996f1e83b86d38a8438bb42b55364ef55. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/BR7Y91900008.
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 0x353721acae17faf3ada4a89165372d587c26caafeca504cdce0daea17d1e53e1. 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/BR7Y92000011.
Vida Aos Sepulcros (Graves into Gardens)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e08338b434b7539848bca78dba406cc8451641f40116a06438811619aa367b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/BR7Y92100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac185fc4b6bf3a0aa520cd16a65b33c506aa5b2ddf6b860b1a13fc4de2ae292c. 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/BR7Y92300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0aff37376c1d38627f3117f5aec3e8bf17d1dfd8931a23f0a72c44a2d9ac16f. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/BR7Y92300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6338680f37455acb7ff22e69317af959cf157d941b4944490da50a4322e281. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BR7Y92400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fc34bbca9fb105ad924f62a22894857d2c0dbd4a8eb3979289e3142dc97802. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/BKB782500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5861b46d61b882e6a4a33b4d68144b6cb1f67a38e277d341b43ca4144921714. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/BKB782500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a78c9fe239f2643546f98785e3636aa6ab002b374f3b96043484cb1abf7b2f5. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/BKB782400026.
Está Tudo Bem (feat. Diego Karter, Duo Franco, Áquila, Raquel Miranda, Idma Brito, Giovannine & Maressa Cruz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8be001b23e473d4894165c48161970ff73aeedb055ff6ef424abaf5de36fea. 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/BR8FS2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8d8180d06813e98d719ba3dc3a001d11e286053cda532c2cd3626832d43d3d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BR8FS1900001.