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 0x73bbe77bd8934df11b245fa33a5aa7c15848ec40f262a2cf2dd7935e29923529. 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/b8e4a289-054f-434f-85a0-bc3130485ad7.json and https://artists.proofprofile.net/proofs/artist/b8e4a289-054f-434f-85a0-bc3130485ad7.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 0xccc652ea29914ea9ac26d1a05777a63e37b37be96770989d783406237263ecb1. 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/FR10S1452206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227802bb4a96e3a518498d223ad9bea45805b588b839d012d729e0821c26354c. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:33:57Z), 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/FR10S1452214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8d5a230df18b1d1257b5b4fbe3fce2d96af62dd2ca256a50dc99987115b4ec. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/DGA062467932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34de8c2b0b48a973df87da34ffa8bb3132054c777e88d3f19e97a445fbaa3d39. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DGA062467933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fa73660d7efa5962936320faa108851cb0274c1f17c3fc5001f69f774e71de. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/DGA062467935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c4a1dbe0a31eec4ec317c58901b52176df64fbab40160931ce548a98674899. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/DGA062467938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51e9c698c8519ff9482b9cbdc5b5b121b5a78c3714f82ab10e677109cbc40ff. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/DGA062467940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0a394ed22c30a355c80b534bf06bc2912a97143a7b11ff485d0fa269be40f3. 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/FRX762027142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f4052c3504949bb3e99add875646e95e283670bba024a8c3124233dab616ba. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/FRX762027143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f7a2904548f4bfcbd6afdcf20ce5efbe9ec588ec1ee41dccbea7826254a7b4. 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/FRX762027146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3aa79009c87db84bc54fad88a1c1601df295cef0ec5135bcd368791ebebd795. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FRX762027147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3446ca18fa14472149e11b74e8e7f7c40e50507c221d3da8a8f3083e4766d4a1. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/FRX762027148.