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 0x9143edb75f44b2f0ed2c2a8236a72d17a18fbf8aa8006e1003b1fd68df14a551. 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/75a2aac7-54a8-4957-b4d5-aef252c63d02.json and https://artists.proofprofile.net/proofs/artist/75a2aac7-54a8-4957-b4d5-aef252c63d02.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 0xe00f39e0469dafc29cb38ea3401346d24901e45f19565072c1c6094a4e040b08. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US6DR0100202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06032e88c770e8c2c81a98e4fa6e0e0223e8a64de796bf9fe7a5a82dd22bb5a2. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/US6DR0100207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407c6fd851e7e019de13863f532f92e72cf77cbd845cabb7af6421ef3f7b170d. 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/US6DR0100212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25eb2606b28ff6c2f4a25011a3f0c60b8a79c99e55c0685fd5abaddc05f9bb5. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBKPL1375865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cccd9c1ca77e70e3d6788ea145045ce47fbd00caaabdbadb6e90d364558aa1. 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/GBKPL1375866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5ac6b5364dcd7d2154ee2e20d5c0b219c4f1418e481b2018fbdd4006c5206d. 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/GBKPL1375867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377e3c2d2b7b2e84725fc20439b62914ee45cbbf22c3531cdd46b9efc9668411. 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/GBKPL1375872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c01e3acdb292156b397c4c1318e4f2aa11c4e7457ad1fb9a49e0f36ebf0e6d. 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/GBKPL1375864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25eb2606b28ff6c2f4a25011a3f0c60b8a79c99e55c0685fd5abaddc05f9bb5. 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/GBKPL1375865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cccd9c1ca77e70e3d6788ea145045ce47fbd00caaabdbadb6e90d364558aa1. 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/GBKPL1375866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5ac6b5364dcd7d2154ee2e20d5c0b219c4f1418e481b2018fbdd4006c5206d. 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/GBKPL1375867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0aa56ad48309f8e70d6d97ed8076e7da2f96525e792d5a01ed7d082daec6ca. 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/GBKPL1375868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e85a746c72b66f5755f19b08a1ac50d076e63520c5b612503f92f6a52fd7ed3. 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/GBKPL1375869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1e0162889f95bc2f891bdd6b80849f411db50204824624e8d470f4997c504c. 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/GBKPL1375870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7496b50e73a4ade1c2450fae37f6d33321d0403cf4d8ab7bbf9ff8cfe442995. 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/GBKPL1375871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377e3c2d2b7b2e84725fc20439b62914ee45cbbf22c3531cdd46b9efc9668411. 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/GBKPL1375872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f49ffeee2ba64a8227a5e428349fa93e058b1b28891c845e2c4d3689c77e9a. 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/GBKPL1375873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6261050ae6fc0439da2b8c2b8ca99aecbfec2937e9b41c4d82edfb0195b5c0c5. 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/GBKPL1375874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b115221e284f25a1e8739951caec782898400bcd92aa4dd63047388b98e8f9. 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/GBKPL1375875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491321aa829321b70fb7cb78a9c354d76c23b474672945ad48fa6e1432b51853. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/US57M1282602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b76d60d5223b3a2b53019b709ccf3c92887f17ee3d2d2c09f701835f9a8c63. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US57M1282606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0d9202360d33daa79ed397f232ca190fd1f434ece741cf3817cb6008294051. 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/DEBZ71100731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6095498b15984dcff369f37ebdc8c87c118f1e32d004c7c635ecb252e14f804. 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/US57M1173505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf043605013fc94907987406aab211699ebd22ab7253b588e029ac09cd3c8d87. 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/USA2P1909882.