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 0x137bac344a167647d5a13c6e35b770e4913c1bebf9eafc29055740be73377f01. 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/97dc2a43-c080-4939-90e3-68ef0fc6e77a.json and https://artists.proofprofile.net/proofs/artist/97dc2a43-c080-4939-90e3-68ef0fc6e77a.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 0x49d33c4b78c22fbccfcdb403b5df413ebc6833422a7e79e665562d7b8035fdd2. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBJGV2200701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748764b40c7f769d11d83c31689eb45c2ee0de4d8f74b2c14a60a186b0fefd6a. 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/GBJGV2200702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe845af437818df54bbdb8208e72633fa268eb8f5b5846380c8ff2515021c92c. 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/GBJGV2200703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77085046d80fce908e442465b79b49b2196c3293e5cd646a5397acb908c443a3. 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/GBJGV2200704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d970a4e1e15b11940466675ebf26c1889f57b413ebd04182645c78186368e5. 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/GBJGV2200705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc9deb88eaded1b6289202925aa472d04655a0ff06fe18d1c6fd60887af6148. 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/GBJGV2200707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e2292d2ae8babf055cfde73c590be1a540a4dae58fd2a0073b7bc8721779c4. 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/GBJGV2200708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401682782ddd220eeec699c15b51911b6ee749748748dcab54ce85764b469236. 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/GBJGV2200709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf0512d754b0c6c1dccf3a72965569eba85d5378218fcc94f015b8f69276e19. 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/GBJGV2000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52320a9733a25de77a519dcca252ccadb79411c39997fa36f6090e74a7c142d0. 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/GBJGV2000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e43e9353770f8f5e1d55b28207df82492a4ef3664432032db5aa6d102431ea8. 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/GBJGV2000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7053f7e386621381be88c73b129a1eb72a6d4009e1c0a9223844c7db5df54a. 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/GBJGV2000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255f1c898b32f48cc28ebfe7ce0c3fb6a4ba6a4d4ec784f501f398d7c6145c0f. 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/GBJGV2000106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2745676e9c733ee10b07d0217fd2232b27121902949853955c3db19661c3fc8b. 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/GBJGV2000107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88eda93f435f6bee308b6dcc75598cde2c3613fc2aee48bd49dafd3ee4705757. 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/GBJGV2000109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77085046d80fce908e442465b79b49b2196c3293e5cd646a5397acb908c443a3. 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/GBJGV2200704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d970a4e1e15b11940466675ebf26c1889f57b413ebd04182645c78186368e5. 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/GBJGV2200705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91d948f224ee59b253aa25ba7104402bac530c756e9cad8c98028771ce86e88. 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/GBJGV2000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41fe57c198451e962af601c7d492876c6c9841bcfeca161d3431b724053ad85. 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/GBJGV2000202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1b637a5530cc6db24855223cd7436e78ec90231f49779c63d41543dd8c5737. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USA2Z1901111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c0c491cbbcb04c0cfa9a5988207f8423dea5650fe440281ac07391df5c92a3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBHLW1900540.