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 0x81e6836a419b4a4b0cedaaa3c8bd78be1361054e83f5c36816b8fd40ea0f9f63. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8e82d9e-bf21-4684-82c2-ae5500cc1bc1.json and https://artists.proofprofile.net/proofs/artist/a8e82d9e-bf21-4684-82c2-ae5500cc1bc1.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 0x6fbab537bb23d9221ab0a002180f7198b0ab37cf1036d5d1ce05cd052e66fa30. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:42:34Z), 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/RUB421901703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26d85d677c4eadbfdc8cfb25b86bf9aa19e19542c2af0e5c5a18ab1c63c19af. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/RUB422000586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f213f0407da7c55f36ada89f6e481af5fd8cdf4cf6333fc7adb96f8ff5b70c4. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:36:26Z), 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/FR59R2188682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d5d9fe90598ea65d5452a4c9cf253c1d8066bd3577b1646cb721546fc1b7c6. 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/FR2X42181396.
Она моё всё - Vadim Adamov & Hardphol Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db6190eded1dd3cc4dbfae69072f528ec6b4092548baaa6c3581491c8c173e0. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:30:36Z), 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/FR2X42181398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11876a5d00a85f9272070f9fcc344201f75de6caca361d6cab054c057ed34b71. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/FRX872440605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c13f69af35a41fbaa416f2141c494d31b06a91c6ad122151fab81063e96a976. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DGA082452770.