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 0x6b1d006c5bf2aa5616d671481fd714ad38e08b57bf00da07e0975a8742f09fd9. 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/4d02038b-f386-4eda-bd46-4e9f8bbf82f5.json and https://artists.proofprofile.net/proofs/artist/4d02038b-f386-4eda-bd46-4e9f8bbf82f5.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 0xc0c09615f1cef09d75de31ad64876d1f4691f33e4a632d6df078e9711d9b0a52. 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/SE6HN2497681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f9cec0e159b8040ec41e073486d5b09dd8adef80ed053ea536dae180dbce98. 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/SE6QE2418558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6937cfadf2a6a4019da2ae7e1ace44d5055516bf550d5c1d34feeb9ad3358ee8. 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/GBKQU2383155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b225151f46f22af41c80268f3db948c15870b509e79ceef2a2dd2526bb97f6. 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/GBLV62104299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c0e178e25a8acf216727b5f3776bc0fc94bdc561dbbdfc658444981647c788. 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/CH6541681515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb982162875f59c529649f97c008d33d02d2639bdc4448f1d1d555c7ed4358f3. 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/CH6541681517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2836829792effa466e348a72ee0d5d0fd6bc64dfdb9661b1db9d2b0409d8f690. 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/GBKQU2189360.
House Radio 2022 - The Ultimate Collection #2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469556d408f7281d3dc33686040ba8c6d2bb099098778bb7b0202ca6dab21475. 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/BE8LH2400445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d333982261442e85c101e669e001d78a15fa85afd955443602b9ad210d1adc. 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/CH6542542394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bb4c5abc497170096d9a96ef2f16936462ba4707913c5bb9e7dab52b77b2be. 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/NLT2H2500450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4b785936560299332e30f94f10452e4a68189de631ffeedb78f903c8909b8d. 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/ITKNK2500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8b14e709c896979af3147dde7fe3474f8d12c194a50e745c3df9098e89cc37. 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/GBMJG2510854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35399ab34363ddb5b0a8912b9e6497119dce2010be62914a660348b658c847f. 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/CH7812530443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd8668351f3f03fc10323d5807562d6b07ea5e762c2299eecf4a372046ad3d8. 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/GBWUL2557620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b07929740c0886aa21daf49d3341ed4081e2faa703de6686b700d0d702bada1. 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/NLT2H2500141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe664d97a5f9d0f56da25c9823a05941ab3a83bf5f3b04b8aa70c24b02522812f. 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/NLYK92400337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb79c3956aa6d588adffc1c09c6b5efa62f9b46333694465a78fc4eb1a8b1c39. 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/SE6SA2422079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9f1bb97d38ef780659e2eab0266ad40fc3570479ec91f8ccf28e94d016dbe6. 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/GX5MY2477459.