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 0x0028237cfe0f1e111519c50000e463945a0695d7d5b331887ddaebe1fbec433c. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c3a32730-9f87-495a-a2b1-f9369e071732.json and https://artists.proofprofile.net/proofs/artist/c3a32730-9f87-495a-a2b1-f9369e071732.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 0x3c0bf0d693436241562a303166a97b1b550c6b01b4120f4fd85d1df62963687b. 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/DEG931591319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ada86064562ea61ce73d1fbb4593eb23048e3ed529d3308ea1793b94dc48dba. 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/DEG931591320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc287713db97ad4000e7c33c726a20bf0c2d26c12a946d6cd346bd67ad44ddff6. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEG931591321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488f0a376cf54ca98531480bddb85309656f5b947bb10dccdfb34ddfe723368b. 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/DEG931591322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a91fb5ce67cc09962c985be03b6f72f839096d7ddbede53463cf50940e6999. 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/DEG931591325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa91162cc49a612f5ce4821a8f4e8f5900db047df49764b0c0485d40e47524b. 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/DEG931591327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df687729bc8c16b7436fe0ea7f5c68d6bc3719909567c67bad6f9f91baae685. 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/DEG931591328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2df62ee026288646d2d6c9dcd45ee78d681f8e3c391a7833db26e679474d785. 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/DEG931591329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2008038ca0b070dd2f9f4269267deeac642559361dbab51de8c9f0e2f363c4. 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/DEG931591330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8397d4d3cb1d56072f612ea8f497be23bfc2b6949770cfaa20d02ba805f9db97. 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/DEG931591333.
The Choice (Windy City Club Mix) - mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd639f871f5b0f9639f3cac35bddc38ae4636faaaef29239203fb77d5a499f6. 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/DEG931591332.
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
Only 4 U: The Sound Of Cajmere & Cajual Records 1992-2012
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2cc32ff4873329a9cf617523d4ebb51a0041afa7a80b65785f84d40ebd0c64. 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/DEG931290575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6042ceae7e18b51a3337669fb886752b277b9f6950f6a8d46fc039d78973c21. 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/DEG931290576.
Brighter Days - Louie's Masters At Work Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84623df9c3c134c77c7c54cad8792448aa1f834ffe62f6d3e5713cc9fec373e. 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/DEG931290577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9ec7164f47a4c28b3ef302e8313046ad0767b58c518901490f96d39b7eb922. 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/DEG931290578.
U Got Me Up - Danny Tenaglia's Club Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70df0a410203001921269b04bc5f791f629568c187c77888a8e3feadd90942f. 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/DEG931290579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d1e6f7f3ce0873259b16b8c38b0a5a69610c7a59149504458add433543a709. 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/USX8U1000650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a6736c3ddb533e516cb00dab85871cdb00f188ecea3681d61df2749ee880ef. 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/DEG931290580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47aeec259fbbed4ecaa4f6aa57ab62807039c5d6da187f316135df1e77786c41. 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/DEG931290581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075efb35218105cf45f9e0134b6da93abb289d99e7d6772860ae562e12808d6d. 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/DEG931290582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23290703706384469af327f5ed191b116813578b53477fd04665512f5583bdbd. 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/DEG931290583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecca42d98e34b0c61c403f7a3052f16a9dd6ad4380ce713c8f9ccd2e00637657. 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/DEG931290584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41111481b148cc68916617ff376a7436eba1c3fbc8a86214a5183263c27f1b91. 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/DEG931290585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b73132bac2673a504b7f73f5c3683ea0d8ddd8a402ba532173173809a2a67c. 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/DEG931290586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c56f6f6a859127637e732f7c4e66f07ccdc596277ef31165f4ae91a0db07bb. 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/DEG931290587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5601ccf9c62c6b6d513474be920554704ea1d6e3a189acf03d7124c53a01ed88. 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/DEG931290589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dac875aa517c498894c12394f8bbfd7d231c054551022fce741ac3cf3c4c3a0. 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/DEG931290590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f1b8dc4a043a9069452a6fbabefde5b16bc6576fdafdbef820bd427ad9c757. 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/DEG931290593.
House Music Will Never Die - G.U.'s Cei-Bei Foot mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb2781dab9800f80612811336215ca401b06190bd6d8dbe771f1cf761ae3ca3. 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/DEG931290597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49344454aec0537b228c68d1c2ac647b8959b6271e0611ba41d6750229d31132. 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/QMVZM9350612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ff9940ded0dd5936b6b182da106cfc946b53c0cdfbf98d62298d2d39733c21. 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/NL8FJ2300264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e6a9376d6279b0846defa8af4a6e65a831f497628e9b7b67c2e767566e24de. 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/QMVZM9205104.
The Choice - Windy City Extended Club Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fe1d4f783e82d65a6861e37168bccd50d08440b76e92873504fa5610e857fd. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/QMVZM9205101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a889901f7d259ea30bc9d9dbdf8a67f7db059d245de367bd3a22cc6afc337b3. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/QMVZM9205102.
KMS 25TH ANNIVERSARY CLASSICS - 2.5 DECADES OF TECHNO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621dacf618cdd72b90aaace16e5cf2793ba00dc5847711312ecdc9adb56cd5ff. 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/QMVZM1200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9dea7b5caa294e876c9e4fef9baa6414bea5c3ac148ce7a8b6998c6bc15bd9. 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/QMVZM1100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e8baa9cd7cbc8b5522d37edf2b27f7b0a027c9fe0fca2f3bd9cce2afd3b39c. 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/QMVZM1322030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062f1291b05ebc18ae38becf0c93d3a06930cf104d394ddc6fa2482aed20e55a. 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/NLF712001372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec4d42a4bc3b063a9231da3dfe9b92e3e66e3c89c6b9b6f9456e779d89526b6. 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/QMVZM9350616.
KMS 25th Anniversary Classics - Sampler 3