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 0xe45fbd41d772fdcf0b2c82d2b39a3d14abd4f14b4b7daea0fb03187c6e1f9448. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4f9d7fd1-17ee-4ceb-92f2-f96c047dac8a.json and https://artists.proofprofile.net/proofs/artist/4f9d7fd1-17ee-4ceb-92f2-f96c047dac8a.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 0x2a81ac9670433864ff59c7596be0681203921d44e8a992f6363d5fc4f675ff27. 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/QMYKN1800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b9b3dfd5bb9f7272a1990799e199a0e11d7c4a3f5837aeed40ced5ba93fd7b. 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/QMYKN1500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435e8af02c84cf8d8495cd7fd49db36a3e68891bd95c1d03201d0c2925d180a9. 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/QMYKN1400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e07407826a1d6a65ed506e5d025fa6b4f84ad6d54e23445227a91a40495dad. 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/QMYKN2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae54f152acb27d1c353dd4c24182dc43ef9f0fcc9d491f9ca8993902095cfc6a. 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/BEZ100900550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a81ac9670433864ff59c7596be0681203921d44e8a992f6363d5fc4f675ff27. 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/QMYKN1800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc873f81308fbbb8ebc472f2a4ffdf3b2870a0f2ed7ee0d695d15144620850c73. 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/QMYKN1500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbf8f207ed49fd6c3bda209ad44f81c6b060eb206552dd987f8682aa2f32441. 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/QMYKN1500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b9b3dfd5bb9f7272a1990799e199a0e11d7c4a3f5837aeed40ced5ba93fd7b. 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/QMYKN1500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba70f7fe65bd383d8ed4cd8a7f7bf5f84bc65252886cfa5db82a00d12f5ca27e. 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/QMYKN1500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66770b9cf6441b829245f82cbf7413c30dbc6eaab0c4b865966f07e388e3d3a7. 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/QMYKN1500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f530b2674df0da79441f84e372b93264828c9282c50ff7e51729c9d0c8bbda8. 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/QMYKN1500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae54f152acb27d1c353dd4c24182dc43ef9f0fcc9d491f9ca8993902095cfc6a. 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/BEZ100900550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ce72b57720c8198e7d19fd30dca97a5583b383f0d45cd2fc29b753d0c7854d. 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/BEZ100900630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8600b75cb170f83a055f9665f4eef44727bddb50003c313eec347fbc4ce72823. 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/BEZ100900660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994ea0006c15b683985b7a8a66f3425c312e0804acefefc1fbbc4e4b74425a6e. 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/BEZ100900640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea196d10d803c4f891b08a31f4c68a72bd15fb884eb8be902fcac6b26e58808b. 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/QMYKN1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435e8af02c84cf8d8495cd7fd49db36a3e68891bd95c1d03201d0c2925d180a9. 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/QMYKN1400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099848d4b6c72de93c3ddb8c7389cc3b840ad4fe58ad3ae105eb256c5183c485. 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/QMYKN1400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebdb0b011c1e1ad30fa7060a902c41646c96887894295c77fe3db7b9b449a963. 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/QMYKN1400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6ab08fb49196e798eaed0c37579fdeec4d4a65d82f0b96cede2e719c2bd972. 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/QMYKN1200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973cac2809c2e5b5b1f0544fa9cec20e1685323ad870cffdaa99e5faa2ec2ff9. 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/QMYKN1200020.