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 0x83bff56b24422686e11bb5552a5616bd1f2d740700b705e9d9ca3a0332f2e7c8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3ae0a1fd-7e0e-4eb2-b4cd-a15fff4ab411.json and https://artists.proofprofile.net/proofs/artist/3ae0a1fd-7e0e-4eb2-b4cd-a15fff4ab411.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 0xd0e3c8eb3daf9b9747b7ef13a8473dc5644668bc5f9a03ee5884a0c180a241e9. 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/QZK6G2043866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae9966445f47e5e824d03f9d8b45f44c0a79291fbe629467cb2f0a09c7c0d97. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZES92167417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70dc34c24d374fbfc9b30b0722c03362ea63cc2c9cf413557003c96b169f4b5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEVX52000121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99fcd313e64abb4d11b460253f02eb35270276996d91807bff70558da50254d. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:50:33Z), 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/DEVX52200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2247d792a9427b98b2fc4bb5714ab29cdab56697d7df336128bfa75c3d57bfc1. 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/DEVX52000091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d17ce5b4cbf13802f0671be6c2a794b3f9dae3b1d21b14e004d1a1b2077e00. 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/DEVX52300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903b28f9e4f2058acb0ca0097d462e0a7b2b4f6326549ab3780012131a2c0bfc. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:08:57Z), 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/DEVX52300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcfdfc995a33f071416ae4fadd39c14216599c82315c58bb69d644fa46a571e. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:29:22Z), 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/DEVX52300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3214527ad8c0191a2ef6ddc6a88c74d5ff0388571a2e9eaaeb6acfb724dd1d9. 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/DEVX52300115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058835e32a2a34b37e5a7beeb2fdbd86b74d7412d2da71cc3e611abe99d820bf. 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/DEVX52300120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d17ce5b4cbf13802f0671be6c2a794b3f9dae3b1d21b14e004d1a1b2077e00. 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/DEVX52300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f193c94ac95480ff534a7c8e1d198439536346cbd916acc689cdb18fb1c117. 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/DE1N12400030.