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 0xd3a1e6e77f891ef8b7ee0f3e9192e3225ccc5fe0161ee821200aa491b2f955a6. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/537f512d-665f-442b-845e-ab5831a20d6d.json and https://artists.proofprofile.net/proofs/artist/537f512d-665f-442b-845e-ab5831a20d6d.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 0xb76709316419a4e8051beda37a5a45e58f8e6adde156f85950cf33861a41d448. 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/DEAR41776284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9daf2badf1007c847f4cfd06746d2c9894744f09b061ae6efae79b06b381c172. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEUF81806613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e28efc4ac8a94f908e59f501caf7b6d9783fa18d2e21c7248642ed0e13c4124. 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/DEUF81806900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2a195f22ebd6cade826bf1eaa097e8ca913eb4760ce787b2b2cd03f4d858a0. 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/DEUF81806937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b93d1656e107f3dc5fd0763d6d51169302197e9214c699a4b4433279bc3ff40. 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/DEUF81806989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fd6413366cad8e2d88fb84ab42d3fbb36a447d0dd4545d13827d340d8a6e2d. 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/DEUF81806950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc66ca89e40178b7c3d1c84640a2a1a62df8d2b5d72978bc124f9fc82a757aa5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEUF81807020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c07d29f33eb80258ab7dc97d173c4cca282d0ac0114d0ddb05ae8fc65dc489. 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/DEUF81806933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430cf035dfb7de11697ff77dc4889609e7298df70781999c0a32dcd39cc65a7d. 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/DEUF81806599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9daf2badf1007c847f4cfd06746d2c9894744f09b061ae6efae79b06b381c172. 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/DEUF81806613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9403f7e3a727865f14c6fe8cacfb4a950c9853088db3f8ca2bc2e8621e70ae1e. 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/DEUF81807687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c274dc41694a9859f52248a7b33e564b29f8b0a3c3195be3465d6eeb36ecf5. 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/DEUF81807684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7096ee94375ced93ce84aa02b8f2e2ce251297f8ce542902501ec54b5d6040f. 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/DEUF81807748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf142c384a4d04da484388eef1979891578d953a5ce9fcc00f0e03e1db4f9e1ae. 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/DEUF81807743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5127d8cf10f65c5334b2d55ac9cca99699a3f9a900cdcfea6a05cbec929806f9. 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/DEUF81807742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361977779d6cecf91d27a20ea33c1fcef3abbb67a43c55b112616e9d4b33125f. 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/DEUF81807700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0115f47ec9e3f20094db9c2f7597b21db405efe6d03622dd92e803330d3a91. 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/DEUF81807791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3f050cb54f2b7cd8e74d40ca34f5d7b3990a2b977b545c3837945385741ed9. 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/DEUF81807715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bcaf8474575ccb09341cba6ba0f7b139c7a92c4245c3a04d888e719eb432a7. 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/DEUF81807785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc7bcd5132c16bba6cf7c8f498e9acadd6e3337cc57cb9e09bcdb78ed0c034f. 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/DEUF81807723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389e627ccc038f2b6599939c5f4973e8c681cadd87605a1dbe36250c7fb0136d. 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/DEUF81807708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f45ed274733518a40c5b77d6f7376a4981930d2c33955d2f67f89fd2215cbe9. 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/DEUF81807802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1acf093603a05cea9a6ff4f3cad29dad5fec115930cb642d2abb0e627ae08785. 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/DEUF81807737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd114b441d4930564f7109b4d8ee73cad9c1817a04f7b7b12f0cf6927d70902. 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/DEUF81807763.
World Music Middle East and Orient, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91f78025fffd63c29df91892eca28e43c4d69a5fc7356646311936724150edc. 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/DEUF81601831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15a76bbeb286d37b2c88b341ff2c229b2b9bf210f316a381994265e5d521aa2. 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/DEUF81601832.
Casting Show: Suspense and Drama, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35ed5f53b2a7fe2c300618e37e87e9e0987219bb729c12e1b6ab4b2898617e3. 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/DEUF81706204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb42a7724b8e8804f7ae5bebde629e64a8611ede5e6f56cc1ab91ccbb679855c. 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/DEUF81706125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed5ed26f7e70ba6d83e3fd1174b497042862b1728f0b3b3e74e106e2d77899a. 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/DEUF81600664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89b9ab4c94b187f3a0c5cc5ab54ba7c1db74060e26523df03fcaff0aad4ab3c. 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/DEUF81806575.
World Remixed Middle East and Orient, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9daf2badf1007c847f4cfd06746d2c9894744f09b061ae6efae79b06b381c172. 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/DEUF81806613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a4dfbf26dc6c911d4a1e19bc9b77012306ff814527a97ed566bb2e04e2434c. 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/DEKU31700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5e79714351dea4a693f6bf825f14974c0079cd8a25fea224cf8f64ac94cd18. 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/DEUF81601130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939177a09799bd5c0553a5152a3d9a923669267e994ecdcf1e2ca5da8ec0e809. Chain 2 (Bitcoin): anchored in block 957198 (2026-07-08T15:54:54Z), 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/DEUF81601142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe185aa92f2decb3838beca6199dd5f55ab08e821292d5258a5d4296bfbc8955b. 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/DEUF81601151.
Big Picture and Epic Adventure Music, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d29c0cc66a69b887be00e973f81438c7f6592524fbca47886e8040d2382b11. 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/DEAR41754992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91f78025fffd63c29df91892eca28e43c4d69a5fc7356646311936724150edc. 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/DEUF81601831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c47ac6238359971591252cc8c114a2a621ef0ce5c0125f6c388280f3766e2c. 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/DEUF81706279.
Action Drums and Trailer Sound Design, Vol. 1