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 0xd4739c5316518ec543deaee4fb26400de995e8b64447bbf7bd480d700574c207. 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/7e94f684-713e-40af-8ceb-71e332397c04.json and https://artists.proofprofile.net/proofs/artist/7e94f684-713e-40af-8ceb-71e332397c04.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 0x43d7173e316069f31d2b38ce9cdd27384d41bb729fda761eefe00f0a1058d49b. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/FRX201812858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e27409e7ca7a8d6c8e37703cb9e97a2fdb3d6f052c8e2df7fc96df7c2d58ed. 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/FRX201812861.
Песенка про дружбу (Из мультфильма "Приключения котёнка и его друзей")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6788149d6d5fbedfc0d9769c0801225cf1faf50136a9dfb1c0618ba987f1e1ad. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:44:18Z), 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/FR96X1937981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3464bd5675c6aeb12b43c150637db38d3936900f524b895dc25f41e8c8bfa1. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FR96X1937984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123ced55b938bc1e22a588934c7758b2fbb522cb8d76a64f923e55c0042cc12c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR96X1937970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69757cfcc99747fef11ae684e3be90b897885848a1c0797e341da0c3758fab51. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR96X1937971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf6e4dd4779b041e12efcb333a5f0657adabaa6f87d5f921f24e382be508129. 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/FRX762075567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa901f91f8144bce5482e7f0a87cadccfaf89db0f9fb5dd7cbc116e3d6bfe0c38. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FRX452386528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70ca8c14bfa529a080c8667b4938ff0ba57adb600e026d608ae5bf943be514f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DGA0L2301538.