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 0x37d3331c6cf1073d005b03f7b70618d92d2f242fab7c6749e9a5ab9899dcb4c4. 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/02743ebb-735e-4eb0-bb5b-a64844f5e084.json and https://artists.proofprofile.net/proofs/artist/02743ebb-735e-4eb0-bb5b-a64844f5e084.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Yqpone Compilation, Vol. 1 (Remastered 2023)
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 0x22c72719e2233d2a44fb6e4de747ccef1832be380099f133c5f224af6c84b0d8. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/BGA472326942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3cab9e3523c57a050dd8bc441883cb6170abed49a4785eff5f7d9a94addd68. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/BGA472326943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a278f13ea9acb601441b6646639e89cc014f80eeb76137ab71eb92182758355. 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/BGA472326944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22dc358bbaab0e36a0d2d3be62ca6517ebc286fd658c4e56c35ad79419c35fbc. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/BGA472326945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3bea97750e6867c6dc2d7d6cce7e9bd4ac6be54e25acfd97557cff76f05890. 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/BGA472326946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee16ad23785466a825b5c3ac1651409773c30d5e9be1bcc72008548e95a7c2d. 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/BGA472326947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfecc1277533bcda0a0458446a194a45de9f620fe681d79c11d87dd69a08f8a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/BGA472326948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe281cad92aaca840895ebcdd5b87cf1907772c180324e29163d0e9d4e22017cc. 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/BGA472326949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af67b93fafb498493e85f5a2c35c377bdc4e80af7f5ee2f1555f911cd14a481. 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/BGA472326950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e82730518b39ef79189e7dce77e46d5268375d1f5c4996127da3db4f7a837b6. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/BGA472326951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e8dd2e89e714f52c8d024ddbac16664dbdaac694d75e25042b8f29de70798e. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/BGA472326952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd997e0fc2c57b1ea6d58a07412d9747ea17a28b3fa9138d887209f486fbbe3f4. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/BGA472326953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6c0bac8f2764bf36fe9aa21de94cdad984a5a0e7a2421d894e965a507d0d43. 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/BGA472326954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8903810252ceb51dab3419b29aea0b18c8901cf5b4bac5409aa4580093c6156. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/BGA472326955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f58926993b6bcdcca2f6867f141b73007875b6b4681cc454f75ce02ce629d4. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/BGA472326956.
Yqpone Radio Collection, Vol. 2 (Remastered 2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfbaa8f4900b29cafb949a6788d4c4db2d749a019b580dcac4fe2553e3d6640. 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/BGA472339723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874e262820d07166a816ec3839eefe92c5f3981f7149ac83b24a9f0e74e8579c. 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/BGA472339724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d8bcb25d74ed1c4f32fc7a86873350c201318a23443b64e9202ded4e59a195. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/BGA472339725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4a3bd0fc2e2d7d5b5b2bd707be3455d96a7ad649a0aadab97427bc594a90ce. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/BGA472339726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cbdbe8166da9339443a88baef9235457e28bfcba17c8958cb3e9b1d6196674. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/BGA472339727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eff79b4c021382ed6e5aa7a290cb7b0e0f60bb45dd512928880cbd050a19def. 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/BGA472339728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c6c4f99701b5d1e566c623e686f851081255ccf07cf3cf0542271e5ccd92de. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/BGA472339729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0dc2976d0f670b0751d221cc93852f08e1e027f5df4537cf6e1ec346eb910f. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/BGA472339730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44097eb8ae8c167d747b09051b2cda23775c796f20d2fd33c3b75a1d573bdef2. 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/BGA472339731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5b23a5d698775a331b6c4bef023b650572cc80b16cbcd45cde63a6400d4152. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/BGA472339732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbec67255cbb1d686cfc709fef0f10c8b5e6d7b2105d0f73cde0396c6ea0472. 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/BGA472339733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec88c1ff18b056eb8bf9c97bd3e80990bf254a1eec225404855b129a9f25e8b. 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/BGA472339734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39106a7080fc715622e065ccbd2b355edc2851a0d2219235888c71546edd1db9. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/BGA472339735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60174008017cc6831277003e4c877108fd21db0e67162cd35983502a381a60d6. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/BGA472339736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd966f71463c1aa10a187e94d14688e376d86f23bf1d0d1b59ddf2cf371610802. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BGA472339737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1cb2f9b3e0095ad2ca706b2083341141e9ac76985cda51943484db3d61d10f. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/BGA472409666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9355b6fa4a9ad209a73ce106e5cc37a6ea2decb450372e071bce2638a333ef. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/BGA472409667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fa532ff292228b2c6b9ab6cfe20f08f7154ba2c0ab79dc463660569b1856d6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BGA472409668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda05a2833f1f7497fd589cbd3c30d5de0444c3dae84627777d5a64a9501a895c. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/BGA472409669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132d165c5efa0045e8ad845550ccd221033c1e983dd886856af9d855b7705d69. 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/BGA472409670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa495948a115908b022027cd153436d66bfd469f5f92c7cf1a4eaca9af0bebcd2. 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/BGA472409671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a2d0ac35c541163accee0e042f655f73b7d4c67c0a8743ade5ed93277f9d89. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/BGA472409672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe040a21b5a0a031def09fa6f86baaeb177391aee4d950b8e0cb2f508abc7da6d. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/BGA472409673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b471d71b38480cf26f7151bfc59a2f1b1762fecd701e062d9f3311e11250e23. 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/BGA472409674.