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 0x1e1dbc68a6eb9cf19a692eae19bf9787c9066119bcbcbba8c0b4ce1efc7c9481. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4a686d63-d0d5-4bb0-9b1a-6204fb0f3075.json and https://artists.proofprofile.net/proofs/artist/4a686d63-d0d5-4bb0-9b1a-6204fb0f3075.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 0x92f4be05c2a99521b97926b495246a954478c0b30bfd3a2d08376ef8d7fb47ea. 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/ES7311000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5775ebef9a2543972fc34a5404b5a477d920b8d24e73192c5b0da8ffb058f97c. 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/ES7311000083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4edb818b89a8fceb0a56e7b36a665d4d3066580239ffe6a2ce5217068ccf4a86. 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/ES7311300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3e641fc4612f6989f60122d7eddc18eff7320c98a39836483e171bafdfcf74. 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/ES7311300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe58d229653853550dd2e1d4aa9db319ed135e199b8ecbd88712084bb12fc952. 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/ES7311300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15312c334cb9687754fb219565fb01de90a604f55e721f169ffdce91fe87c1a9. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ES7311300013.
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 0x0df5a3848bcf87df501b6e41acc6f899938fe07d72e8f96a02d4351740eff9f4. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ES7311300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01af2ee12783b42166a6f4b5d384b13724c028d1d48dbae9041512a043e0a54. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ES7311300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca618861a6937dcc8e92583a58f1beaff3ffc0756ff4fafc09edf16a5bacabd. 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/ES7311100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca187abe5f27b2d20d8c5f0aef1093ca0a581781cf8623b88ba8d4f0aad845d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES7311100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea673648e761df9f890712487b7f2a0166186b1f7061fd1d9088437ede5236d6. 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/ES7311100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c2938064516dbcc038ff3e8712e855c7916253c407cd6b7d68be326982a0e0. 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/ES7311100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e8e6b323dd404c37336d832a07d2a69e2d959c89c3a0761538803427205b09. 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/ES7311100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43e91fe1403fad3d52f8b386f664725afe8e4a114e32cd33d8037c7cda38084. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/ES7311100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0eb6b2971fdab9fa6b5df8abc7cbbc0d2752cb61d5685578e7b869e28c5f80. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/ES7311100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366853302fea51c27c572989b411ce0fe2ca6985b68c3689b9055ce4e60eace7. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/ES7311100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb44e5cf04502044fcc97046cb179be7678e708427493b428250aa1b13a25d3a. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ES7311100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4e07fc265c45afc6ffb7aa76447340b0fa882185b0b6537db1dce4607ce9cb. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/ES7311100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b21cad3d0dff8fac171f39ccc6d8a9bbe150f1a646272265d787288daab1a4e. 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/ES7310800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62baf03ffefdb56cf7df3c91dcf116915bec1df759faf6d53ef4de490eb894e8. 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/ES7310800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa396e8d40ef9b440a7b9f28c81cb8b1f0b9cd7c41cc2a449cff24e5669f65f43. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/ES7310800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb81693e395515ab97937833272321c40f2ff3b7bfc491c469ab7c6e5ab166be. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ES7310800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58283fb78452d02d78e6d26710d832a930c5a3a140e1fedb4d1493c9da585054. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/ES7310800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdab7739c1916ec3640bba140e6f00839006e5bcc6763413bea6bc69b7e41280. 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/ES7310500059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ded3532bd2cab22cc155109efcdeed178fd69c726fca129a3e0c84a3ffbf7d. 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/ES7310500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99aedc064d5b0d9c669723fc4e328339d019e5cfe9ed6456e990091a44b4f96. 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/ES7310500062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce21beb166e868a5b12e480f5b7db0eebbdfae4e8b8561101a967a9e3a52636. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/ES7310500054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd264d316759fc4839df0721e83ee9455c2244ff889606464a40b9bea832db64f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ES7310500055.
Never Mind the Bollocks (DJ Click Rmx Vol 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93ef4aa8091d8c2b4107e4afb97f1767f34e452824eda6bf77964f78e7c394b. 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/FRPIV2236480.