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 0xc39acd1486e230487ce046fa7836fa04dc997fc33b551a9b55e19a549fc0bcb5. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea679716-0a69-4e88-b37c-0494e54cebea.json and https://artists.proofprofile.net/proofs/artist/ea679716-0a69-4e88-b37c-0494e54cebea.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 0xb40b000731525c30930dd9f655ccad02732a987757d42662c9d65ad289ceb53e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/RUA1D1614854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83849583bc63a38d1bfd5f50f23f09a32ee90d48fa5935f8eec01c4e27126539. 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/RUA1D1614851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49c3602d5bff1aafd0f2500556aedc7ed6281141ea31f1eb51df8bdae976953. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:05:57Z), 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/RUA1D1614848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcfdb0a891ba75e24b508b12221191de9a417fbea3501192c9cb5ea502a4e2a0. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/RUB731565961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63b07f60d83b5656e8c2e61f3cb19cde941ae068b6a07c75d70e6b3a358fbdc. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:28:32Z), 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/RUB731552280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382f37ca705a30ad8f34ccb9de4831b9476685efae4f3459c0cb5604a3d8ef24. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/RUB731559869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b2d1fb4db5af340b981497382758a844c72d773c3f4d9205c41a24b3647919. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USA371499606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40b000731525c30930dd9f655ccad02732a987757d42662c9d65ad289ceb53e. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:03:20Z), 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/RUA1D1614854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91b3ef648993e8ec29a75bae8b703d2b412044525ab5b55861b9837c12b1d8c. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/RUA1D1614845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326ed805dd5c5d27f4e346def26c903bf04518b1d84287170a7f8ca453b626a1. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:47:41Z), 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/RUA1D1614852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab7291ed36fb785c46e480e6186629100d7b9e98f89c4ab784909a00e7954bb. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:57:32Z), 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/RUA1D1614847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3675483fa8356d780a56525ed0bd3524f0c35c460b5e628c9c22a82abd6dccb6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/RUB731552274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d1b639d87c4c184ad2f0a69800351085bf3bdb3b0e91bb654e811de483d5ab. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/RUB421900587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a53f9a16c5c43559f2968074181ca5cfbd6496581e2f7a2e972c1fe873d6f1. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/RUB421900590.
Симфония № 40 Соль минор, K.550 / Турецкий Марш
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf312bfe6226351f45dd11c03ac0335d8de5ea4312d5d924f15daca9b502fd376. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/RUB421900592.
Вальс из к/ф "Берегись автомобиля" (Live 2023/24)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a235d3f0142972298f7b0d9411b72491f078a1773ef81b1c41e033fb851bda6. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/RUA1D2441342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74fd3746ae6be2764c0d2318f617b9cae7c67317e66aed9aa33d0a331e72e35. 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/RUAH62413988.