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 0xb7d947217c35700934d140befd51af7d12daf3d2ed84b38310dc8523ef9ac1e8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ccf245c7-38aa-4648-acc5-ce883bf03512.json and https://artists.proofprofile.net/proofs/artist/ccf245c7-38aa-4648-acc5-ce883bf03512.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 0x49cc093e65c07140398bee5fc68668672a43bdf69f107ff02865818934c08f23. 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/BX7B42000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae2c0e579a678c9af203b1745fc9a8150fe1bb8fa94179fffc1aa42f5ee333b. 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/BX7B42000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed9c12089debf62db9f3edc38da64288a05d45b96d02f5f666496ae6bbc1e53. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/BX7B42000019.
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 0x199fcb3886200653b278f79a55701e2e67614acc91f71dc34fbcd61f6b1e8923. 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/BR81W2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26072cf4e8a23b27614dd280a8f146adf760fa813f2f403e7dfcb0fbfdfe433. 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/QZFZ71963633.
Believe In You (feat. Pitte Goiabeira & Débora Ulhoa) - GV3 Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c330aefbc65ae96219faf679e6d5bca07fb909c4859d2cc187da8c2ffedc6a6. 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/QZ5FN1716971.
Voltando Para Ti (feat. Além dos Cravos) - GV3 Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76e87217bbc87c24f2ba756721aadd9da566474da0af03385791f7f134e6b64. 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/QZS1Z1608308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b1ed3ea37aae2b5458b7a6c2ba0baea419959c173050ac1e191694c92d0373. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BX7B42000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3336f1c848e7462e2a4f37eef549590d3ee872e1043f9aaf85a11c6e43adb30c. 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/BX7B42000024.
Paradise - Michaell D & Look Project Dj Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4936523abb331371625026e2043069b83591aabaff6f0b99f22960c968e3fce. 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/BX7B42000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa097d24292173cedc44d7033ca2a6690dcdbe9ba1eb6ee0bdcc4b33e5698281a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHZ31921353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe559c685981df62985a0e694a8ac8a43a6ce39a5ec66f42ba56999c16c2e5b4. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T18:00:40Z), 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/BX7B42000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f33222a013c437914731560c78e41c4fe2cae9dd3c5b00c2b2b71816d8e6ce. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/BX7B42000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29957fe439bc38e012c38fc053dc829e8dbbe69a07f42c2c99bf1c112b8eea7e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BX7B42000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57546ba79c7290a4337d39489108b9b2ad2043120724ad38c7a56edf6aa4d198. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BX7B42000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192972084cf1632874d5d5ad7eb8c14b6fbd8fd96b7c016a32804a802390b2c1. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZHZ31921354.