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 0xa2009bfcb33c5c442584df50ecfc9d8a2bcec9a56d9f14beb4347aa0d1d07a15. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f03c5517-c952-4d35-86c4-39431039e57f.json and https://artists.proofprofile.net/proofs/artist/f03c5517-c952-4d35-86c4-39431039e57f.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 0x0e02bd3d65eea1534cd51dee67c7698cc1edf045a686dfdbd8ef8d5ab1aac456. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:33:09Z), 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/GBLFP1790567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ca15f613131d61728e32d66da69d990c5ebbc8d48cd1553e8482f9cc75a473. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USHM92010334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7789a6cbe31d91373fc3a32e891f70535b94fcf63f40e822e96069147b61293. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USDY42019383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba025c17fab7e22e8ab87c84b94ad562a7a5e98604029caf3fb6575299df86ac. 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/TCAGA2268832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fe55711d2936ff92ccb27ca764037a30c1069ff751690ee8dd2f9308139579. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/TCAGD2256432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb067c411c16ada88e364873d8e740d5d6f708e4f67a62fdfc4c37d9f2929b6b5. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:58:39Z), 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/GX3Q92351893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677fd9e0683a03d94655c84358fa4ac14d311f8f3be351bc0397fa43b0f43b71. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:10:17Z), 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/GX53U2342051.
Blue (feat. Horid The Messiah, Dougi Draco, Landrose, Robot Boii, Crooger & Owtoo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f9f0a51e1155c871da2186e80416c987263e18ddd315414b85e953ff9c8b0d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZA40S2400727.