1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x505870e418ee8f7a62aabc9d784fe9d411c310207fed1b72b5512608d0543d29. 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/1ee0e0c0-ffc1-4c8a-adc2-9932a8e1fdf3.json and https://artists.proofprofile.net/proofs/artist/1ee0e0c0-ffc1-4c8a-adc2-9932a8e1fdf3.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 → block OTSBitcoinBlock must exist at that height 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 0xf5416a5269da9f5a985bfe054dda5caeee60af693eb06bff90a43bd70c09614c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCACM1630319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea4d16ff76b2871265c30840f99c157a201c7eaf331916e84a362bf8c3aff93. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:42:28Z), 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/TCACM1630294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0f2f613282f728961fd192c55b84d4c34ea1c6a112e518b5bc142dceeb0561. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCADF1734900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7527945a4f33208ba4d16fb7a7100c60a67671ab9e1299661d91a26715aaa769. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAEE1924400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c66c27fadfe53eb7d8462e33d290c690f59dff911a355a8263f8178e1d4f39. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:08:49Z), 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/USLD91720807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02b95f95e69aff2f6d79382086a0e91083752c071d7b62afc669b99b76313d9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZD442000123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f69156b0f740fc37c944e6322293a3627f2b3c20d25dc8d0cb98bdefd0e217. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMGR32208932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a916938b91a0927d5dcb7b9cc31aa61aea5477b53dc8c93bac24d2ecd482870. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QMGR32208971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d1006d1010c051a8a9e65886280083b9d838c91c933d6913aa3c3da7e1cd9e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMGR32208969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86108d5641623e013ae9042aced26871d15638a920e4ab92a0a8dfbe78ea285. 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/QMGR32286038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127b40a76c50fe53376cda41968488631e133391a88818de558735f214e2008d. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZMEV2350845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b1ee1c2b600bf6192fecfcf52177f1dda634aaa46c7ae6cecada1474cae280. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZMEV2485116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a29e59cd23da94d21780c663f56d85d77676fcd01fc2cf015025167122b3e7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNMV2436753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adac4ef9d20971cfd0cc9cd1519a7b2dc438f4adf15b8d917c52ff83560e670. 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/USUYG1124285.