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 0x884ac7d31d07dfa4d0ed31ec57319aa6bbe3d37fb75ba761ab6d9fe62ecd446d. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/603bc6ac-8961-4390-a141-262799458ca2.json and https://artists.proofprofile.net/proofs/artist/603bc6ac-8961-4390-a141-262799458ca2.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 0xa30fd9cf702bc69f36be398bc264564e5d485b597c8f91355df2acd9bb16de66. 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/GBTMZ2101078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f519c41461aa4157acca038b32abd4d8ea27cd1d43b3fef6011e20e3f49388. 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/GBTMZ2101060.
The Sound of Drum & Bass 2021 (Viper Presents)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c5ed21e73b21715ab8046838969a88600c27fcc04cc5c32f921a536bf2c75e. 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/CA5KR2113990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f23b8d8513c6b930f27d9bb1b4ce9707ffc2014abada07eac97691452d7e5a5. 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/CA6D22100117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d91d878e21f775d17794569cac45e992ee5ae940a0fcee0a2a70c26c82cfb0d. 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/GBTMZ2101067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f519c41461aa4157acca038b32abd4d8ea27cd1d43b3fef6011e20e3f49388. 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/GBTMZ2101060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f519c41461aa4157acca038b32abd4d8ea27cd1d43b3fef6011e20e3f49388. 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/GBTMZ2101060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba3fdff3ae4a2b58cfb985d7083b474a954b291b3639834b0117a59db4b7859. 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/GBTMZ2001028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87b073a615f64537614244eefd37653e078d9f7b56392520f0a60dcd775fe1c. 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/GBTMZ2000980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe077889b74fefbf8ccb7d710997aaa8f0911da0b7988f8b59a6ec0a416c42020. 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/GBTMZ2000976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffdc3dd1fe993f34edff988be77ef72fd0e47baa0af0cc69fc5bff0ac6e3ba1. 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/GBTMZ1800851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a572c1d1f62b047fd037480419273ca2ad7e37b2aa5d5a1fc193da0531e723. 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/GBTMZ1800854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7581609bb0abc16ad3a2443eb55b4bd750acab2c221bc0afc7d265d06375a763. 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/GBTMZ2001035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b165be54a9b4dd5a14999fbda0275d8f18fbc9d25cd1768e0a60658fcc9cbb. 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/GBTMZ1800897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17131fd29a80e936da7138476fc74bf299fbac7ed8317dc3454e14764d98bab4. 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/GBTMZ1800871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37123437da0152e249e77e1c76d722e7a73ba8015330a40376ed4b19625e203b. 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/GBTMZ1800874.
Drum & Bass Annual 2020 (Viper Presents)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bff178b5f7a2b5c2104a400b09ce2e0c6b16b02c8d45767123525cd84ac78c2. 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/GBTMZ1900927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8599d0c5bb109a8a19725830c4ac19eb0f0f0787570dd15f890c56683e77686b. 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/GBTMZ1900940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17df436efa9c0d73fda03531eaf624b3a005446fd72617204777b03c6e9b9372. 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/GBTMZ2001000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2063c4c40e8f27a16ff432545f271ab90e24b03a1f82191b89070acb091712. 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/QMEU32004229.