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 0xeb2122d820eb413efb7a3955b75e7f14c5ee5330317d99f270349ee065c09017. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12a27a85-d524-482f-bc11-4200de1594c3.json and https://artists.proofprofile.net/proofs/artist/12a27a85-d524-482f-bc11-4200de1594c3.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 0xfe3e1ec9b3cd6f1cef0c195b91f132cc063ee8796d291b993fce4ba7d6210a85. 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/QZFZ32022023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14e3418173bd92905077a95c5015355f9f94d077e00e516631b970c6c992ff1. 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/QZFZ32022024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557ccda59e152eb6ffe26dac9fde6ee8ad5759a56ee867bcc45d0ba824ff21b8. 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/QZFZ32022027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec87c6dd870ba8c0bdca8124a16f126fdd7c29e5ee17e96e23c005e4a439c1c. 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/TR2202005227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1c73d8e30505d8a46cf4ff419f8a4b47466dd7f2b71b926b81b6253b9d059b. 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/TR2202005102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5306ff6a8f8e4a07c46914c3bdf52e25788b17e3d9c81ab3a5c5073cc7c174bd. 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/USLD91741460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99389cec8d8b5d124bd4e384cd9105d98eb8711986fc920966819e1900875b19. 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/USLD91738314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78ba3d9d7eba0f2fb4d91031a75f8b58f5ec1801240e7cf453c4e54e923ebed. 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/USLD91739261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c3b13b1823d2a2678c15187ebf9b8701213ca887a69c0a4fb0abd3379f1467. 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/USLD91739262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa81ad9e99c4238fc699c32db63a1db4848ec3731306239de05aec8cfc6cad60. 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/USLD91739263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0400bc3e3f2fd4ff8ec11832bdd92df5355b834c8dc0cc3c3c864d20065f6987. 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/USLD91728807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0775921c8e49eeae7371b2a87ccb2761db4889ad29a9459ba04ab8b3f3f90f82. 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/USLD91739264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0e0b80896129614d0592f6ba1d9c8bb2988b3314f22d1b95df5c1fe11cfb12. 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/USLD91739265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1cef7919c619b40aef2fa8bc45d8a6a474aaab585c7ddd7bad8cbf13f31ea9. 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/USLD91739266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448581c5ef69ac73f168895a90219a18f58dab2a732611a4a351faa47a698d1b. 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/USLD91739267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec91dfbfddcac054e2f060bdb2d2fcc7b1bc523b17ddfa0917d2ffd5d8e11175. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USLD91739268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2b6da62f797271101754558e0ea92eecb43b7c41ef921e0c391e807e41e088. 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/USLD91739269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c26dd40f986c4f7662ea098129b26a7b023acba06d60b83308684f873157c28. 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/USLD91739270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34cb2c46c16518beab6dafd7e06c9f6109dbd7e99625eb9807cadca704a68cf. 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/USLD91739271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99389cec8d8b5d124bd4e384cd9105d98eb8711986fc920966819e1900875b19. 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/USLD91738314.