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 0x9874a4f9dc61924e70b98613da6fa27cf5033bec02680e7334fe9b747a94af46. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c9110a0-ec0c-4ee8-b286-a33c72ce75fd.json and https://artists.proofprofile.net/proofs/artist/5c9110a0-ec0c-4ee8-b286-a33c72ce75fd.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 0x6bf794297abee13b866cb768773aa6dc6668f5c8355f2125a166def005c307c6. 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/BXHBP1900812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9bd3df5e973940c97ef20ddb0537b9d3d2147fc1cb7ed5337d5cdea179ec45. 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/BXHBP1900813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd765a4b5a118cc2bb5b1db56fc7c5ee53c7b591e51f58568c28c8d54383bfa45. 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/BCPCN2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6539b2668138fec808eede12e621f3078be8cec05711ab8c4aa64d0bd8de4a27. 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/BCPCN2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3876e40d477cd5d61cadc749611800ed047d8cc3117eca6c6117199df95c61a7. 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/BCPCN2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6ac4eddbd3ceff5d642efb9c09537a5249dff23037030daeedec956c524f11. 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/BCPCN2400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dcee2289f1dd5b90604ce9b6d7d43f594a19a759c4f78b2492ff5196985ef84. 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/BCPCN2400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe8c2dd32bce16dd2c64274a1f442a435eebe4748665dc25e4cf7268fd55577. 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/BCPCN2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b445b29b2ca69f3c52d219354bfd74858c3965a53f8599ac066463519aa202a. 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/BCPCN2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f319567d1d3e5211c27640c7d694d8ed6c4cb4f194a177ad69963e930140147. 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/BXSQU2100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e746848ecdb63b6920e718e3a7365e1939e07363278d9552ecd66bed9c20967. 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/BXSQU2100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74eb689cebcf37989ce765939957d00663e70474b63a8645f27f6dd32784bcb. 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/BXSQU2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb1cf6b8fd66b19fb915d970fe7b78f832b8587df5ade63f386c73ed8c4da7e. 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/BXSQU2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9726398efa6fe0e88a3bf6c84ce208307731728e9c073b815ed1d8de1981663f. 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/BXSQU2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c058da8f9d57948a90f358cf6c1a2f6ebe7808b82ae202f32aad3c6fe70f7e. 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/BXSQU2000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a4dd4c4c95e93d20422d355d6cf09f0165e427926353c0803ee0a21c8b256b. 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/BXSQU2000015.
Mr. Brightside (LoFi Chilled Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411f874bf8e2758c10e27d3312e29a6427ebdaded2323e7a3ff38d74f5c2ac93. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/BXSQU2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54ed0d477f002b4ee45f36f9a0fbed7c1071073e1a2f35133354d27472581f3. 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/BXSQU2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c33cf0842348b51c82e094d8c22cf4038b4d7cd0f85c0e64180842444574db2. 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/BXSQU2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547a9e79cd6fab3c0c7fca878f8a49736489832591248b94674ec46c3f24cf28. 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/BXSQU2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c058da8f9d57948a90f358cf6c1a2f6ebe7808b82ae202f32aad3c6fe70f7e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BXSQU2000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9726398efa6fe0e88a3bf6c84ce208307731728e9c073b815ed1d8de1981663f. 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/BXSQU2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb1cf6b8fd66b19fb915d970fe7b78f832b8587df5ade63f386c73ed8c4da7e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXSQU2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda523b0adbc37fcb670e71de7130a4ee3f158f2b2c47303c0a50a57b1da59841. 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/DEPY32000097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5368260127268ee117207bacb27806eb531f958201b4b34e76c144e3dfbf4d2. 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/BXSQU2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808bb8315bda009d62e747dcd8fa2df36a5dc69ac28a4c66e3556a816b6158e9. 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/BXHBP1900268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c928d577d44bfdbffe8bc720399f238763457f4737fd8554e3e36e4cf009349. 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/BCPCN2400252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9045989078254a2697d094ec02e1d7b9f9b93804d8c45f2fddb32062adb8416b. 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/BCPCN2500043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946676b66d1c6a318903be882e9aaa5a5abb7258f30a5c02522cec59b6eb8691. 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/BXSQU1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03dccf511eb798af144067f75e1b548fcb9a5afe21629a927c130e74b6da3ed. 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/BXSQU1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66385433f3f59856cd67e217e5cd860b5b16ba053253c3273c4b4e8cce96f1c1. 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/BXSQU1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7adc5d820796ee7862e0822ff41dd17ef3ca4b64c6838a2292a5f1b7786a8de9. 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/BRRGE1907620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a27be2cee3f97e9892b187783592e1d852034efed262ae213ef91d161332ba. 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/BCPCN2400098.