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 0x584c6a951417c53a90c155d40049b58a8ebe234e51d81d2dabeee8c06616ce19. 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/92048eb0-9951-42f6-a11b-9fb6ae56a8d4.json and https://artists.proofprofile.net/proofs/artist/92048eb0-9951-42f6-a11b-9fb6ae56a8d4.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 0xd2e2a4e85bf64c3a3c081370aa44198b8578f26e4f58bad2e24e1681f1878523. 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/FR72X0400807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8004813b4a958a7f22e990ac4263adda2b4f65958e6755a23977de2dcaafbd9. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:39:06Z), 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/FR72X0400808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef584eca1ab9027f699281db179315c411082ecf7c0adbae9c0f5ec58ff94ac. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:39:13Z), 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/FR72X0400809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d81a1fb65d837fa0c2194431dd50eebd48545d221a0d779c2ec0e9678dbb0f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:33:18Z), 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/FR72X0400819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0abe55f7427783fb6bb67babff8b4738829205b5088dca25ac587e0aa7c963. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/FR72X0400820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43599e70a523f13f82d406f0791e8c6da018ad4d2cffc48f3496bc840ca4ca3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR82S1600205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69a1fc6f960916c634ac0f7c0e931835f70f4cd5fd992b322abfb9f0bac9042. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USCGH0806806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4da6e478506c87af14891cd083c2e6ea9991b51d365783ffd8cff958cd3d3c4. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR6V81738425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3bcfc64356af6730825010b147ff26bae792d87a504c140da71e009832fd4fe. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/US6R21479862.
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 0xcd514de9d3a9f70a58257ecb9ad1bf99b3f65818d12d6a31f2aa093f16260f2d. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FRX202046274.
Kizomba, Vol. 2 (Dança Comigo) [DJ Amorim & DJ Beleza Apresentam]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b773f6b4464ff5689e4df0ce56a15c5a994c9490c89aee9be1f1baf196d171e. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FR10S1443084.