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 0x22d1e6715e4fd70513cbbe18fafcbb44fc20d3d57d7a496322dadfd5084b33d8. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/810b10cc-f8a5-47d6-a5cf-c2a0f0b5335b.json and https://artists.proofprofile.net/proofs/artist/810b10cc-f8a5-47d6-a5cf-c2a0f0b5335b.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 0x67301af6c9d17f34da18374ff2e4370abac75a95e2f9413e9fc4558d44f96565. 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/DEAR42014340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6febd88e2869907dc74ba9a41012bbe5ffecf68afb6660873e5c21435540a503. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DEAR42074557.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b0edf91c6d103c0ba035fbc112e733bb7d2619050905aa5bf32c0b696fa470. 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/DEHK32400831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07d20ae0d1fe863b52445c9f1ac10f618c8112da1264a2fff2dacc18d0bbc0f. 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/DEHK32400832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf510f8624dc103fca67a6655d5d397291af6e31f4bdbaa1cf463c4dadf2e0fd7. 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/US83Z2022735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf886655035df061ec94ec71a73b3be09638b8c03f308174a8b2e96aa62e74d0c. 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/DEAR41910850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffefeafc880d2bca5bb38597c40a9b6ee2b38bddbd6ecc131dba4cfdc977e7d. 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/DEAR41815002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5906405cb70ddcba8e6ce9e2837b3d08691499004062a83f1254c97e36d7a26f. 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/NL8FJ2300094.
President House - Superlover ReWork Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cb0bb3ab821cb713d37bdcd191c22dc3aa0f795b5a2a8f3cd0184c481e5a8d. 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/USA671600001.
President House - Joos (CH) Extended Club Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b100a1269614b3c0e283acd04efbaffc942419d58dc8d18d1a37b3c9527c500. 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/USA672100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3926c38c6059e469bf6b7864a6b83514b5a654d806be2338168fbdc35d9892. 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/USA672000126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8043ad15e3648cc13ddb1ce671c49754cc5359a2efa1de4406394b0e93783803. 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/DEAR42165206.
Street Parade 2019 Warm-Up (Mixed by Freya & Sonny Vice)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe121b863e50cbedca5f1aa901a2b03b8ea6aa2836005947869d884c8ad8a5110. 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/CH5011900132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da4d2aa98e85b5bb8fb3f794962850b966fb8007f05a6ab50618b06a37b083b. 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/GBEWA1900111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23820cb23f7bc33e39c9b82c386a63bfd6cb9dc62e0dbbbb3d5d94ee14a2b12b. 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/DEY472177867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d7e0a38c0bf108fd22ac8ae8d6d91246cf5115d5605114590aea21b3b2f668. 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/DEBE70600005.
Zirkus Zirkus, Vol. 10 - Elektronische Tanzmusik
Best of 2018 - 1980 Recordings (Mixed & Compiled by Dan McKie)