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 0xb0259da48fc31cbbf2234a310ca38bdaac56d6b185797965e6d6e5dff5150dfd. 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/14e8ec55-3817-4033-96a1-c23800a05cbe.json and https://artists.proofprofile.net/proofs/artist/14e8ec55-3817-4033-96a1-c23800a05cbe.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 0x397ce38570a34f58bb0b11d463f2d35587441fa10cd9c2f644cbc5280a21ca5c. 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/BXKG22400337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091268af82a7061cd31369430d5b80e8a4927834c9555ac50aa8f1c49ffb5b94. 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/QZHZ62085335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68719fd1b6ebcd97827bd0c8c6a59a2ca5438a00fddc015b4cf17ee70eec6fc9. 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/BXKG22302486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfa8a03e7405b5ae5778869b783ff4a7fce7d422cb2249a5f79e7043d8d92b6. 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/BXKG22301215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a221f0cd3df5c7853b51e591abbea9f5dcda61321ad0bf55ffa8bb523fdf15. 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/BXKG22200173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaeeea10f3aacc360200bc1fc85166f5a56a8475d75f32d558a610666b12db60. 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/BXKG22301653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f66ee8e07c93f2c935621d054601b1aa7072efb43ae2f294c3d364007bb456. 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/BXKG22301240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5f6c3b71ef6f1f376155980d90a7410a7f928db634e70f39e1212c5286b87b. 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/BXKG22301487.
Luazul #2: Deixa a Vida Levar (feat. MC Vinny e DaPaz) - Acústico
Luazul #2: Deixa a Vida Levar (feat. MC Vinny e DaPaz) [Acústico]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866dd0912e8bf2d25f8096249e02e7276cecf29701164fd4c6c76330905bcc63. 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/BRWMB2100622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fc4bc47e9b0e73b2c4a952170bc4e93ef72f7b295a9d28cdcf4703463f7388. 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/BXKG22400610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211ad7a97dc8833dd19cdc6fa3c427dd3cb3a6ec49766fe4865402e87da25ad9. 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/BXKG22401385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f78ef0d3562f44f6d6ad88e447c4f394eef9a2e74c39f228a623ef741319000. 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/BXKG22400877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd2b8a1c4ffa9edfbf424168480b7fd451de3cd875619883d70b0fb12eb4bab. 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/BXKG22302281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123dd0c2c3eaab7bc7aad1c4dcb23751bad85ce6df953171fa5e61b3d3a72a64. 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/BXKG22201380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa518f25b54a29514c7416aaa289c7584cd0087621d3b8cce546d248e4f63d351. 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/BXKG22401483.