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 0x98640983c9bda10551e293eeb504ece998fb9164bfc62e805ad730a3de3afa64. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/180425a6-3406-4ba0-84e5-990ccf78bf68.json and https://artists.proofprofile.net/proofs/artist/180425a6-3406-4ba0-84e5-990ccf78bf68.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 0x1dc5cc625b911e113c7058c99964a73020069cdaa80a328469908568b91ea7e8. 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/DEKV21802274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86101ed8fc279b3c14004ff7dc24b3da3135a6343442c529982b8229a8838a9. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEKV21802315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb9cb589296b1442b65d3810c1a9d7a79a401fc93eafb263f9854ff7c5cac11. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QMZL41979001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade3fa38c3d0b12c684f9c070b3b5e6089147fd70c96da9840fb51bca8427f9b. 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/QMZL41979004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9520f5ed739dd0e1f68b89b84979b54092bd8787120d4719d9b40b5b4c13df7. 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/USL4R2144928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e831605a15eb5a724dade7f7318c313f845311634425e987b641b96f1863331. 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/QZMEN2492551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02522fcd94d2821bbc9869d0b0cc2bc9c9397dc37a13653c6e79c929a48be0c3. 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/QZMEN2492552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9046c2a821341e6b209d5e1add419e7a1614dca95160939a9a97e6c9894fbacf. 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/QZMEN2492553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5878e202031540c2630831567279c9bd7d6c30ef28baddf72e22ba00b68ca127. 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/QZMEN2492554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333f15e0525d621d32d31ec5646399b12d93ad94e6e52bfbd4d38c3caddaebd8. 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/QZMEN2492555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85823b159b7f94dcdff41b79fd6d9e4cd85486d718f7233b01fda8d599ec6824. 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/QZMEN2492556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c7e4f37351af28bd95d787ac4142ad1b251cbbcc261e25a173e177923d765b. 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/QZMEN2492557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cf238b228cddedebf3f2e0b0ae75e8aef47a28ca10fd48684de66c0bf2cb41. 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/QZMEN2492558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d350feb1a835181e40aedc124b134db0b930a47347d25afc4170a19bfe26c2c. 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/QZMEN2492559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de936d0fafe7ce82c60b5c0a591bf59957c1ea1c678431bb6d1e2201115f47e. 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/QZMEN2492560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ae7ab86bacdf40c15e9d966169bfc64d458ec8479119aab1cc115a796f7abd. 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/QZMEN2492561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee63ca6caefa35c784224e34ac9e2cd4c68a046533a2b9627a0bb0f8ab506c2. 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/QZTB82437954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ffc3f2f2d42a0de8e7321359e7802b10324a373d4cf273874d0dc49a386075. 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/QMZL41910006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde565d25ef426a3583a799acd8d6d0683ddf9293e8c5a68c57e8f594778519eb. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QMZL41910009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44efb96c9986852ec4fcc017f9f5b961d1a97083a88ab7c2add5de947e546de0. 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/BEC262392402.
Heaven Is Not Enough - People Theatre 7inch Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4019862511901a63f133a763949927efb2b0fee647a26163e535e1a3ba993c. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/BEC262392405.
Distribution of Power: A Remix Project For The American Civil Liberties Union
DMK PRESENTS - VOL II: Into The Coldwave