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 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 0x69b4e8a9462108cbadf931ea0b9a0dc581cec19ee51db24891a4d0fe057610a5. 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/f2fa3628-d207-43a5-afcc-fb7582187c0a.json and https://artists.proofprofile.net/proofs/artist/f2fa3628-d207-43a5-afcc-fb7582187c0a.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 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 0x22c25c4416d4d278809b47913dca91dbd241900b7a3ba5bf3689477f401ec0ac. 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/DESH42300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b458a81c75925759c09484f6449f2200ce043520649f6f236b2afa586aff88d. 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/DESH42300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1b09939c81fd618f122cb828fbf23f50cdf329194945ce10504c25c5ad6aee. 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/DESH42300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ef0bdb41f5f6d97f11710fa4570484c4d03de670ce3a84fb706f6062bea286. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DESH42300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9028ec550066c330de1e61e4ee8836d4ef6df4ce76b3889a16e9d1a6df7dd552. 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/DESH42300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d069002f230edbc6f4440c8edebf064b87ac1d6f90cab515ddb17010ba6ad3. 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/DEY472088408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b28816d6c6242cac081ededd64a64a4bf3c8758668ea1c46884069d7f76a93. 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/DESH42200092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b83daffb7b94ff9a9066ad71892f6be638575a4805a1e3b4b530c1f28ded47d. 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/DEKN60900532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4989f83094b09c46a4851d45d1c1c5062303a3663fa97a04b59a1aa050db5f39. 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/DEKN60900313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155ca135b9d710ce3e0f4b66df3b1e758d2eddd07dd0f60f2e1a7f156b5c71a7. 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/DEKN60900314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6400c86c4cedd9e2e98e705674f58524ee822e144ae324af0ac4db4a896ac993. 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/DEKN60900315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd956e18fa847e0b83bacf825c8c7105fae5678ec7803de219a228c87311d2b1a. 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/DEKN60900316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3591fc1038be29ad5dc62a6e442ff1fa90b8671f270c346149ee11eac71c4a89. 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/DEKN60900317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7356ba48620f0982da9237f47514493ed7c6dd29f68e07d185bb049f6e5d40a7. 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/DEKN60900318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b067bb5d891c750d033e30bd60a2e154b94fe8705cdb4c744ad6277c055667c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEKN60900319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de0ac612680768a8a87506fc51908861a9ba5b57fa0a8e9a8194fe73240acf7. 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/DEKN60900320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7190fba85a70bed420fe3202e08739bf13a2d98a3f63033eccd6b03be60087. 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/DEKN60900322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ac0a649ed4831a4bef66ef9bfc2f514ff055c2c19d81a2c5d1bde78e86465b. 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/DESH42300068.
Cycle Twice Remixes by Niconé & David Hasert and Kosmas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee08a82e248f64a8f5ae9e66fd57af52d9f41c1dc622078a62327441d98c5645. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/GBKQU2346932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774c8d0fc4ec8024aa4b4bab7f3be3dcc3ee40e239f802b99670103ac1323c41. 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/DESH42200139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752e78a9d051c7749ded53e19b32ecdfe93a8110aefec8d18c978f5279e8b282. 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/DEY472275890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b05163b36328895f20f37f43edf2b9e3139c1e5ddb180f558ad7c7cd1f1dea. 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/GBKQU2223410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e649578f04b9089be8e298b3da64333fa90adc2c544e83231a6c303a5bafed. 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/DEBE72100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877cc2cb31282788ccd56402f8b048694cc082d909eda7351979925be467b4a3. 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/DEY472177732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f60e718c723ca19c9af6e8c7456ea034b14417b47a63475376ae60faa39ff7. 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/GBKQU2149296.
Suicide Is Painless [Niconé Remix (2021 Remaster Hands On Series)]
Tell Me What We Are (Dirty Doering Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e22fb953a89521c8003b6f21752e18ea646d6259b3936b750afae73eaeeb42b. 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/DESH41920012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60276ddfe686fe990f87e71735e8769091a1f5bc0ba158d53d584b9ca85986d. 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/GBKQU2116349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332a7521819c69d283ab1ca4c9b73284f97868c18f4e0877116645200332c302. 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/DEH741114514.