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 0xb258efc6953b6192a73b79eb288a6b43a529c3b72a18baa2530a8830de9d0820. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/434a194f-e915-4d43-940e-28d2b66a52a4.json and https://artists.proofprofile.net/proofs/artist/434a194f-e915-4d43-940e-28d2b66a52a4.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 0x5ae2d7beac57b03fa9783fef4dcc1ad70f44930b4b8a5d9d8e10f4535f127ef2. 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/QMUR71900129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae50b7232624625c33b48b6b9edb6496600405c61eb0d43f37fa26da82531ad. 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/QMUR71800095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71aaeb303ff72735ad6395ba511b6c867894d099e2467ab7bb12181877477af. 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/QMUR71700092.
Unity: The Latin Tribute to Michael Jackson
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fb4844f8a6561d0d50cbcb5c69becab4885030894f2ef09b38ce257b47e7eb. 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/QMUR71200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735813e6fd217d4f0e9f88d783131069f6dc5abfbe9ae41b32f74178b76834d9. 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/QMUR71200010.
Unity: The Latin Tribute to Michael Jackson (Live Concert Special)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0882c8266048b3038a079245732eacd2180cb3f8006648cb3a6761213bcc191f. 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/QMUR71600076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85aa965b6c543794616c27f18313d947fbfd66dc6aa57123211d0eb4a32529b9. 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/QMUR71600084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcb2199db8a408785240c525534606e42dcdc863b35e8e3e925f40e75415a82. 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/QMUR71600087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733bcaf85547a4232797e2de79e05c283243c8cf2fca4635e969b84ed5ccad20. 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/QMUR71600088.
The Way That You Do (feat. Jean Rodriguez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be2103c4736c30548ba5bedf62f891f026000f6b2d8d963c6a17823b8b51032. 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/QZWVP2400017.