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 0x6ba05f386afd4cdf9de3c0c82fcaf14e35ea31bfc9438758f17e4b25ff126d7f. 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/adfdf308-dd96-4537-a34f-bc0f9cbb9c2f.json and https://artists.proofprofile.net/proofs/artist/adfdf308-dd96-4537-a34f-bc0f9cbb9c2f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Smells Like Teen Spirit (feat. Daniela Maia)
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 0x70023010a4fa9db15bacd1fbe48baccf2f0981057cf89f4ed9c5f278e62a92c5. 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/DES401400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1683de4ac5b84f87312e1317e67c0e041c1619bc41425dc8b1a91ae737321c65. 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/DES401400018.
Let's Stay Together (feat. Daniela Maia)
Best of Bossa Lounge (International Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfed299289df38941e95f8a8d4ce96c8c9b403471b84837220479d5f27aa5c07. 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/DES401400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88585d21341fdf7da73519adc05a691dd8723188706476a6ac9468931c971c77. 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/DES401400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547d9259662c1a598478b8dfcf9ed921153739d3ba0f0f1c558d8d4b85b7d24d. 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/DES401400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1683de4ac5b84f87312e1317e67c0e041c1619bc41425dc8b1a91ae737321c65. 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/DES401400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70023010a4fa9db15bacd1fbe48baccf2f0981057cf89f4ed9c5f278e62a92c5. 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/DES401400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb506b2048089a9ea2a79cc464c4b7dc0fd34a543f56761a482029859a31fc77. 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/DES401400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38892536299ba360590eaaff08064577c899db217f6db5a0fddad8eaa489051. 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/DES401400031.
Walk on the Wild Side (feat. Daniela Maia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aacbed56e79a4baf51f6f150012eefcd71942947f93296343270a289b132941. 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/DES401400036.
Best of Bossa Lounge (Millenium Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4c1aaf9d0c7e7c92d72fff539ac0e765c73224db4268d035bea28ec8695c4e. 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/DES402100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2d9f00acc5104e71ca7eae162000f419c9738941ef8740b5a5a9f67579cd52. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DES402100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429bc7eb1572171a8bbc4a26e475346f84827f525daa88b3348f1307c258acd1. 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/DES402100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc818030427809857004c21548dce4ff35723dd6159d0670e49060b1070a647c9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DES402100025.