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 0x4de8665f139129f8be3ed8b9353a4231af5a8f6a871d9adc2f60a7a395a84067. 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/ea00bb40-e01f-4610-a19a-90975197db9c.json and https://artists.proofprofile.net/proofs/artist/ea00bb40-e01f-4610-a19a-90975197db9c.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 0x5a036787037612680a65c22a7e1e873d6fc72921050441e6b75347b8a6260107. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BR8EX1500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe992e48cf1d4807f417b29a5419f31ad6d7c0d371312c991dc7917749df9b27b. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/BR8EX1500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d647aad56bf6bea20d328a227ecf0db56ef0cfe3aee8feac1c9ead813c504c. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/BR8EX1500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc3d0103bbb4f8d882499f9db04bf410f051beee9587898c043599dbd0553bf. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/BR8EX1500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5581d587895276aa9773c00509e9d2ee44a2fb2896c794e73bb53a3058d4b91e. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/BR8EX1500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf951910a6fa4f7c74309c3759ee264eee7d9215620c195b00c1b50c3d38bc187. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BR8EX1500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3d5bb13ca02b9e2fdc46d6108da1518bbc542f01045c857b05db2ed0110b4f. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/BR8EX1500024.
Perfume / Meu Amor / Até Que Durou - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdfdb589d56717ee3b14a6e8bdb3fb1a8718d5ea34564729a59a468a7cb7481. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/BXGHW2400026.
Tá Escrito / Pela Hora / O Canto da Razão - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89764afe982a22606d0d21554fabaf5654cbfd63efc0fe743728a49b05bdf5df. 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/BXGHW2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bc45639c227db04f576eef85d9860331bc50d05a9a9e62091a92ae160902c3. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BXGHW2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6eda2fca0db8efba1786315763a58839d4f5cb00d181bf54da5ece5ca0294ea. 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/BXGHW2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0556cf17776183e5bab1d55978ceb973156f91cb0218059fc24dc94cf23c8028. 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/BXGHW2400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a5ba17e15475523ee7d1a81b736a98a3fd3994e387520113c34170d58b190c. 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/BXGHW2400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31240081efa9c5976fc06d30926ca997d573703cf8d2d5ed7ae56a3cc6d91346. 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/BXGHW2400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a87b906d56b858fa5f068c76447d41fb930403551f49271482b7f8427d658e. 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/BXGHW2400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a584316b3fa922276448a16885118b004f18436d0fe483cb371ecd95817cbd. 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/BXGHW2400033.
Incondicionalmente / Eternamente / Reinventar - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db5582432317961ac0864d0cac6b89e400b0594292e6a714606521ca8a337e0. 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/BXGHW2300042.
Abandonado / Deixa Alagar / Brilho no Olhar - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e01bc3d4589e9cb30c534ff04b995dd24b5453b086cc03bd86c28237d5618ea. 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/BXGHW2300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ebe96c58e0a2e0e4ef187b860692399606d536bb62e3314111a63b816cf8f3. 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/BXGHW2300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b1093e36f77061c9479fce4421cb9a26092a4b3d3531ca4037fa051152c0e0. 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/BXGHW2300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdfdb589d56717ee3b14a6e8bdb3fb1a8718d5ea34564729a59a468a7cb7481. 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/BXGHW2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89764afe982a22606d0d21554fabaf5654cbfd63efc0fe743728a49b05bdf5df. 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/BXGHW2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bc45639c227db04f576eef85d9860331bc50d05a9a9e62091a92ae160902c3. 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/BXGHW2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6eda2fca0db8efba1786315763a58839d4f5cb00d181bf54da5ece5ca0294ea. 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/BXGHW2400027.