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 0xadcbe7af2691fb9e59d35b5475321454db1f76480b71b43cb62b0ea171b92ed3. 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/1e305df9-964b-443c-ba41-bdc57418d89a.json and https://artists.proofprofile.net/proofs/artist/1e305df9-964b-443c-ba41-bdc57418d89a.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 0x7ed8db4f58e89cbf1c04250eab03d8dd80387f9e6f17032ed2b33771a7258696. 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/USHM81961550.
I Do - Bruno Martini & Guz Zanotto Remix
I Do (Bruno Martini & Guz Zanotto Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7425dae1f88c973ac026b7f788186fac4e5cf713119039e78a554aea9e0cd5. 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/BRUM71903466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0498772c91b19be7a31d4409f041c83455933a9af643a9add079a828a5786c33. 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/USL4Q2016882.
Cante por Nós - Guz Zanotto, PRINSH, Geminix Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702326121b3f4b879ce0a52721172dbe133168e47097db641c6a3d60ef3be758. 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/BXHBP1800168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2feb728fef9766281b61941a276e11aee5ad1ccfa705a1422e30f3a53cf76e3f. 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/BXCTR1900142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c99c362cca12a13192d74e81f4bb4088e18eb1bef15143ab0c49869b0fef063. 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/BXJLW1900080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c6140ef731a965bf63ff065d61199477cbabfc85d0baf42fbea00c5180c6db. 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/BRUM72200334.
Imprevisível - Overdriver Duo e Guz Zanotto Remix
Imprevisível (Overdriver Duo e Guz Zanotto Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73512376b379546a0d705d57b4668458eda1fb28be42c7e2eae57a7409f45790. 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/BRSME2101715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6af882949698deae31f789c6b8f8f2ea651235cff33d6606a00fd5489dcba2. 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/BRLC32100062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6af882949698deae31f789c6b8f8f2ea651235cff33d6606a00fd5489dcba2. 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/BRLC32100062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a39dc029b02a4ccf1338edcd915926cf5440194329b853d413663c4a9cddd9. 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/NLF712011915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877bd92d6a2e5ae146c5bf086121a2ac8d481b918fcb8aeb3b6a2a7bb13b7b9e. 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/USL4Q2446080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b2d2110eff154d8a157bbe131f10d6119881d2ec78be808d6e41781ada9d37. 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/QZ5TB1997223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2701c9c5ac01ca2f4007b31f4cd14fbbdb8e8e6d4729f08f28bc6dfffdd9ab28. 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/BRU5R2200036.