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 0x4eaaa6a3e3b9b9c63f1981908cb5eb1b6ecfe32ea2f01bba3069ce2385b0fe7a. 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/4b2dbe4e-276b-45fd-932d-a1f9dedfb561.json and https://artists.proofprofile.net/proofs/artist/4b2dbe4e-276b-45fd-932d-a1f9dedfb561.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 0xa99220970123c669244315a8a5f729c62bf9719bdfbbb5f171297392c5a5df0e. 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/BKTP72400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4101396f6a07f5df21d1f3c2faa9c9651fc801e5f11c8074d0698535846fc3. 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/BKTP72400014.
Lanterna dos Afogados / Segredos - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb1576fddd95d8b794fc730ecfcb5e87f6f40d640c3ca6086bd81607d94f59a. 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/BKTP72400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33478fabfb2e0dce34634b5ddd2fa305c12448eebab38399029b8bb10fe26d55. 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/BKTP72400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04a91f69a54235d47ae2cba247b0af7f42dfc7f60acc9535ab566a57e8d243b. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/BKTP72400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c6b65458c74f246277cde5f2e00e830ead5eb622dcad5e8e3bc5fd6414ebf1. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BKTP72400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963b399c7f3221c0165a381f8ba95929254196ece32063bee262163e3ca90e21. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BKTP72400018.
Lágrimas e Chuva / Acima do Sol - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58df691b1fb9f5f8296ffe024880f09c20714a2379070074df36a3b19e53167. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/BKTP72400019.
Meto o Pé na Porta / Fale um Pouco Comigo - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de43cdef3b3af9045449f6ddc8ab90b778e97fa8b8612e81234854f58bb5a86. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/BKTP72400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9062b43c90f1f8547f732916b8190f89e2f7d1c1639f6aa6273c5879416590. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/BKTP72400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2644d0c5c2720cf9aaf32d43015b82d091e3e61334fdb711911405dfde34c507. 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/BKTP72400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69f85f48d627ef8997ed91d31c88ed63921d8552828328d19ccc3ac01e1e805. 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/BKTP72300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe318be88822a88846ba5d099b687d88162f811d766d82c87b219990f0f38ff47. 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/BX9ZT2300291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4a2e6fbcf0d62e66d087dcf572abcacca583be0512446a3d14d85de0ca13a6. 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/BX9ZT2300219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b294b8dbb52d73c79b1a1ba85e7022c4a3772b3616fb964efc8f5354181d8ee. 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/BX9ZT2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69df62f8690acf41870da0379672eff4b82bbd6f93f36b867c2184ea646197b. 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/BKTP72400027.