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 0x46ca9e40180c4f2a4189c1e8777f103dca4888fae84a47626b64e01d2f5f7ff8. 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/d78e8fbd-d935-495b-a566-9b8f36a87751.json and https://artists.proofprofile.net/proofs/artist/d78e8fbd-d935-495b-a566-9b8f36a87751.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 0x5d38f52919446b93141cc964e51289e59e5b9638777c39f979f86972214408a9. 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/QM6P42468528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342b1d2949c38b64bfec4709e8cee4a8c75ab20b17b117866a988a6c8194a638. 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/QM6P42444193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384953eaa282d5c51493d588c44af53a74f6bcbc41f8e13a820c238fe7b077e4. 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/QM6P42468604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd5f41b3a640e008c1503b1e80ef3f18e9253b38a65fcb948f631b5aff427ea. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QM6N22488637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8031d3a465b3184e6bc627d00fa040b70666aef4bd858839cebfff4345b21e7. 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/QM6P42468688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342b1d2949c38b64bfec4709e8cee4a8c75ab20b17b117866a988a6c8194a638. 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/QM6P42444193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd5f41b3a640e008c1503b1e80ef3f18e9253b38a65fcb948f631b5aff427ea. 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/QM6N22488637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b2d45d7f18627b8316d7f56fcb28516e67d2e73c8c28e017603708e62f4895. 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/GBLLT2404777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6948971f312818018ba39c54cb1360326fc79752cbf19a74de1a9bfe3d8fe63. 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/GBLLT2339059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39c42a7976d60bbbc9f594e6df617f85e2880dab536a23c7ce3f66d0e0372c4. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:34:30Z), 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/GBLLT2244282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45b61c423fe2a17e525c1afbd6bf90ef53257f1564e35b50373760024911e98. 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/GBLLT2244283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c74d578b1f9d20801c13e03a53a63b27897fe4fa0b6f3dcdafbc861182a878. 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/GBLLT2244284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969d6f322f1e623e7fa355fc212f6449008ddd762dab2ca8dc8c8ba414164e33. 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/GBLLT2240190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969d6f322f1e623e7fa355fc212f6449008ddd762dab2ca8dc8c8ba414164e33. 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/GBLLT2240190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1abd30a2f4de4a6e11dcfad553144a41aae658094a4385f6c3365d12de41f93. 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/USDY42185748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a28a410215d4125bfa495c8f0a05cca5e2f09a253a21aa824c29e77be00a7fa. 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/USX9P2032051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d153df79209d83efb547cedae8f081fa2283e5fbd0a91014a83b62b20acca94. 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/USHM92013020.