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 0xa575406f9e1746a36448f2679dc65f889c254a016514291250a6a6a3d5ed1330. Chain 2 (Bitcoin): anchored in block 953638 (2026-06-14T13:10:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/399380bf-479a-4adc-b5b0-341acad47d24.json and https://artists.proofprofile.net/proofs/artist/399380bf-479a-4adc-b5b0-341acad47d24.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 0x601d025340e03535a167fea01e922cbe0c8af14295d040a2a34b50269ef01088. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR6F31930160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860d25779d16fde4637a5d7ed822a3f89d77646aab0aec6962399562248f62ec. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR9W11418249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece35c47ea0a06bc63cc769ca8b8e45fee3740d45bf42c6a2c212706d9b9b576. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR6F31930180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ae78b4cfdd92dec0b4d40300185241e971547241f909092b1661068dfb645e. 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/USAT20110383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1af2afdd2d0e6e32cd21cfe069268f5fb7b46f6e851ad0c3028f7169b60f35. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRP211100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373753c4159453cc4fe1704be595950f8592a942af734e033df6c22e434b7398. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRP211100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a7d6b6a625dc3827e9bcbdd538b105ce71fd822ee826f681ac06ec2d72bed2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRP211100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f82cc327ef2d75cd922b47b66803da1348bacdc5a1714f975ccdbb955300d1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRP211100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901eb7e1c0b3fec43cf810d7904f9c55e852f3e924bd087b58dbdb80453bb4fd. 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/FRP211100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3e64a7d04065eefb134260630b32333518a0b5b36d039abbc2f3696006016c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRP211100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295385b0a5aa97ef3857913453d8fbb7eee913079e68834b3bedacc4472a1b7e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRP211100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ee4faf67350b350d47482317d0d174774a301f6094f6738de6f24a14ba3bdd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRV251200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c5023f089e38f86d14d258c4f1d5bef46884f3c3293191e290181487a73f58. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRV251200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36791fcd445c970ecea61191da71a6588967cd4f1ceb81fb7dfce06dd0b6b9c7. 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/FRV251200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395cb16e37a57ab71910fb81f5b68cf2d77a0c714b831508e36dccd24c667ff7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRV251200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82aee52054a95915149490be805918a3710564caabc61fe01b2e0d1ad6254440. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRV251200010.