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 0xd03a8d5cf70b567b01675a4fbace146e185c8545906a15db4f8a3370ffec7748. 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/a7a7af10-2b5e-4256-aa4e-22a330a43194.json and https://artists.proofprofile.net/proofs/artist/a7a7af10-2b5e-4256-aa4e-22a330a43194.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 0x33faf3769a0fc453ee709ab0f001ed2943d86c6667c3367bbfbdf62fd1bccc64. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZGLM1957044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a4da2800a9ef53c420029421277b6d660faf585bbad680c14caffa19a304d5. 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/QZHZ52182905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8e9dca6083a6dfaf9b22c8136d2b913b1f650a9769661ec6f086db3d13a558. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHZ52182915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00be9fa01f31179abd1cb30130327f0a31963edb406297177654f810218e5e97. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZHZ52159709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9675f160f321a9d3c1e8a1ffb15563989823ba99df6a104e3a7431796122d8d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHZ52182907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6871e5212b16941d5e2ed03e49078a2ccb62e5cdfe7cce8a73beaa6248a525. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHZ52182909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03dd8082a7cdd91690be3a3139796385724ccab72ab3ea0316a3e2ffd142c270. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHZ52182908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19534cd551f94f29372330f1ea1e0755dd02d553e48bdd8b72769eec8c76b436. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHZ52159713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bc43f93d41d01addc714f2ab71a18141539a38b8243b787b5dd7b7038d5ce0. 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/QZNJX2176035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bfc77588b5e2c403ecde42db97cff3be55d72219a53beba56a2896c16d14f6f. 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/QZNJY2312492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6a2e6f3b7556990c46939cfdd1447947e0d11d10b9c67c18db3e9232d73580. 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/QZGLM2545686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d68aad3d17e70a022153de20c6f377cff91fb62fbfa1da9bed7fa3e970374c. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/BR5G12500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc914a41479de845872a0b5807331264c9c94f934440da1c4cc03096834f2bb7f. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/BR5G12500006.
Sinto Saudade/Perdi Você/Finge Que Não Me Esqueceu/Medo Bobo (Ao Vivo)
Sinto Saudade/Perdi Você/Finge Que Não Me Esqueceu/Medo Bobo - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c9d7f5c05ff8f5211a9855677a993cc9581f10382a1975c1323a1a66ff692b. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZTVM2533682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab3679d0998c6fa8c8146043f21e439a1f398f3e8c1af5b90a8c4cb203d4d61. 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/QZGLS2480862.