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 0xba5a856361390ee4f52d00619e1b7a970fdb744e0f9d3c8672eefd013eb3fa78. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90f48634-b888-4ab2-8312-1dcb0b307b9b.json and https://artists.proofprofile.net/proofs/artist/90f48634-b888-4ab2-8312-1dcb0b307b9b.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 0x5adb51f860cb1cb0ea7c44c9a62e2bb44f8684adb120c351f93ea0a03435b3fc. 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/USJE62001096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99b520e28edbeda0670e17928d3b4bd5df6ef84e9c02e4622a4b0941313211b. 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/USJE62001097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ddc7751c571994aa48c26ec8acd82c601ace4de2ac74721ad8fce073efa8bb. 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/USJE62001098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d7ef117aa24e23ee115526eb9b2e30f273a83471787aa7da1a8db3e1b17f58. 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/USJE62001099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d0b4bae9cee1342cd86e14ce18fa1b8f2db1bdb31c0f758ac6a5d9dfdd7182. 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/USJE62001100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027b1a46a649a1bd823e015ae3fa15a293fc4983614f3b1fd3943c5a8988820c. 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/USJE62001101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d9e3ced5e1e7d9f725fc89d5d182bbc68f8d8d9f44946e9d7ce1f66cf1f12b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USJE62001102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86352114339b253372efab18734af95a69ad61889d4446bcc6dc20a5b9245328. 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/USJE62001103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82a90396f9b3533afe28774c8b95d362ce05e8580d03b178c031ee3af205278. 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/USJE62001104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539aef187c4468e5fb462c1a343f5131964a9a4ed445d5c122e5a8328ea1e764. 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/USJE62001105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1231965785d42cfb2cffbd944e6ae889c2e66cdcb59c17b6f998399c18110d92. 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/USJE62001106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc760f1c5afd364b167709661998497f770e1f0afcb9038872f2ce232fef33e1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USJE62001108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c497a58fb5c35fbb5c78984410f884cc7dd67b55c19b850f2043d5c523542a8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USJE62001110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1200277888c8d771736653e679cee33b63b420780aeedcd92310ecfc81ede4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USJE62001111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f413d28f3aeaecf326e28ce5c886998caef5691c02dcf52237f08634390903. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USJE62001112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b792e926d6dd0fa91552d3b5d15b2f74a9771ec1f17edc1d0444eba6e8a46c8. 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/USJE62001113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59482b4e22f7aa666518c31e6db494fb240feca71c36ea8eae570be1e2fedf6. 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/USJE62001115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d4edc4b1b66ac74218a6a248026c3aba7bc1a6bf0dafb4316f6029442a9920. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/USJE62001116.