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 0xad5a80d476c30c2675063dd21421b4ac76d7064393883f4c992ab22bd1e2ba65. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1281a4e6-a512-4f79-8430-ecedebee771e.json and https://artists.proofprofile.net/proofs/artist/1281a4e6-a512-4f79-8430-ecedebee771e.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 0x27985bd171e26bbccb8d184c66f1697565e238f0506475b8ec98690c455acedc. 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/QZS632318130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c10677a47355121f913e10cd9197cc31ae00033fc402b80dc85861f2329305. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZMHK2312146.
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 0x38fc8b6b467c0a066c870598144a5576a0e0c10777adfc2e47aa5e266e0beca9. 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/CAENV2441666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54170760dad14b7091b015e9e268661d35ad88ad5cbf6af0cb73761e5e0a7b1. 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/CAENV2441667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c404921fd36beeb2544f75ea6589924228847d593bd6e8188f9f7533d0f9d4. 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/NLCK42505305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73acab690679c1d1af33a469c9f89f091f6d61fa1a85ffdcb41b554a54e01a77. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/NLCK42505307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac3ecc91833d1d6e3630b8841973a049a539a4345e73cdce2888ff3bc1696a3. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZES62418235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c80af7fdec4db641263fe015ee2d1a5465d35fda495b111ee8c0779cc6686b. 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/QZHN32328553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62293231a3a1dc90ccb61baefe00c67b73f7a647fd8d269e090825f051d937b0. 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/QZHN32328555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63929b3abd434993c44db2e9c537e7ebd5bfa55029b4abf8ed491a1e637bd61. 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/TCAIL2461064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086a65dc46f878fcc15fc47d69eb2bbbaf18a3a4b94b79f82bc6385fed457664. 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/TCAIL2461067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6e447dbaf698f1105c56a967615d572c584191a90304360937923423c9392b. 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/TCAIM2461072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef03adcee52c74da5e070752bc33012ce72aaccca2f60e328399f819d88a114a. 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/TCAIM2461079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59aadafdafa4baa12e69cb38a2a0aad12ba038b8ad270fa87ad93d3e6701b23a. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/TCAIM2461086.
She Likes When I Choke Her - Cancel Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ebfd81a880da5f1c8d9c25866a218dc5162a78eb7a61b4206182f27686da5d. 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/NLCK42416657.
She Likes It When I Choke Her - LS41 Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddf934bf30603cde23e61a4b907deb1072d6226009dec767005724f9b622122. 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/NLCK42416658.
She Likes It When I Choke Her - Dy Vertigo Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99f305787857c8d3f4348f7a5fc18d99840793367a84417ed0588ad915bca0c. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NLCK42416659.
She Likes It When I Choke Her - R-N-O Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6953d28b6b92033d3be3e0efbc177e6ca7841811fd1844049e07acfeaa23108c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLCK42416661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b9475770251ca1339a2a500745d01460e9a18f9eb0efe83cbbe1c0fdb01ed1. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/QZS642133246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48081565b9167c6e18ab6bf7488cdd77f8107f598da505d98273ad6c4b98bfc3. 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/TCAHX2446909.