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 0x77db56e129b7b5b295f0133c426a4322ebd93cefd86b8d7b380b8079772d44ed. 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/c17fc167-f0bd-41c6-9f63-702f4cdc107b.json and https://artists.proofprofile.net/proofs/artist/c17fc167-f0bd-41c6-9f63-702f4cdc107b.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 0x79de9f2e24f435e529990f8575d6d84556c6a00d3a77c89d0816e777dce43218. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USLD90802858.
Cigarettes and Perfume (feat. Manicanparty)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cba64be7ae51c7a18185136fe9a4b8768e2b1b57b82b06dffeeee29c3ccf73. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USLD90802861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60191d87e91b604b9d6e7cfe389221c541101769b3fee3f27d530c75c6fa08a. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/USLD90802862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af31b2d33546427dd3d0a99c30439fc21d0fb45da4c896592b8e85f8a2e7ae4. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/USLD90804093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc943f9e7ce75420f68038124ba65529ec998e4d6307085e088472a6f8a30b924. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USLD90818800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ccdf07fa5452179a3fc364380a57cca23fe277827db4c3b2d5271b9d44a5001. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USLD90810179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31f82add5047ab91ba91557ccc28b26b837563ee81b31b0b387bc2ef7161703. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USLD90818829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7166b8245ee8ef59a1fbc4326c5dd74d68978e9b8fa07d7c50dd92861599e192. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/USLD91600360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7266e076f637ff56f4b41955324871294afc54e910edb9ed293172097d6586. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USLD91700394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0fef2d97cf3cc3d0ce4c145d3e6c076d16958b07366d95edb7d6c1a14bc02e. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZJG51910014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7187ca75524d2e5f8821600915ff7dc1c10dd030549753e5500c00b973aef6. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZHNB2065618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e428772a13c97aaa00aa6b5f95e2b74f723eb430d7df9f43c43c54c8ba537d. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZHN72155579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b207c415154b34803f80dd687443c642ff5e94ba52d3b2c77405959546ca0a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZFZ42270867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a98e295a951e3e6c8625d0ed59acd69a66d1b26d2db055d3699898c032edca6. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZHN52220871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0f167478e61abe7f64e2b602ec5fad433638ee6c445bb1b70de810582442fe. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZMEP2225933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4ba60eae3189a9cb346de22d78fb8d824c86f0c2609b427201ed75f11d2ced. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZDA42389477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098573b4ec63432fc3740e6ae1373efffc73e32fbf7ce4dc03e39a65a01d0545. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZHN32309371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab8c491025bb93f747609151df148f8d4827a2eb34d67e286673bfbfa1f623b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZMEP2314151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57259f231346016d4f684daa6738b9963e75f9d098cafd7fcdf23279a130b15a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZHN42467582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb28db7b52149aa319a5b21700e02ed64bd0dee3f67247f8ef9eb5cf0bc746ca. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZWFG2451774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb28db7b52149aa319a5b21700e02ed64bd0dee3f67247f8ef9eb5cf0bc746ca. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZWFG2451774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a0093e3a12f8bba420e037b2f60d31ee394b55f0a9aa51ff7d7184d6b11b93. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZFZ72523024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb28db7b52149aa319a5b21700e02ed64bd0dee3f67247f8ef9eb5cf0bc746ca. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWFG2451774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31a5eba3fe094eb29618cefcafa527c8622a3431cd42074456738aeb0d792ef. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QT3F62579207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5770815e0572a590d75430853ff49ce12c974bfa45b4add2a07b580c446440fd. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZNWT2522523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57259f231346016d4f684daa6738b9963e75f9d098cafd7fcdf23279a130b15a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHN42467582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb28db7b52149aa319a5b21700e02ed64bd0dee3f67247f8ef9eb5cf0bc746ca. 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/QZWFG2451774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616076a011d60f092f01dd9e7a4a0bebe36486978c10550ad6bdf3d2c85fcbe0. 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/QT3F62579208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6a2f0f0b6c51070ba9f7b96aa3bd63a97602e9371e0aac47495ef08b5d3c24. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/QT3F62579209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d25af8607fe1d1936d16a340c0232c8bce5fee2018cd737d8cc7321356b617. 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/GBKQU1779660.
Role Models (feat. OnCue) - Walker & Royce Empty Bottle Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b9f7bc783959f305179dedeb3761b6ec62723c5c48a5df466578c1fb419bbb. 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/GBKQU1880051.