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 0x698bcc5ea8178faa868680576bf37b09c9b57bc441d0be5a98b6ff17ee14e9a3. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9093c845-ec49-4d31-b418-f37403a5e0e4.json and https://artists.proofprofile.net/proofs/artist/9093c845-ec49-4d31-b418-f37403a5e0e4.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 0xa8173d845b7c837bff87572c7d35e008e31efc80ab57281f8704b58e87153884. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:11:24Z), 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/USHM21371470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0070fc6f9d73171840143334618a7111c266ed17ce429f716521301b8d0ef95d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USHM21371477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5061a5f5173896affb8d9f393304eaed410393cbaae2dfb213984e474e67a44e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:03:23Z), 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/USCGJ2110588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406e7a6df0924e96367859f4ef12e629b0282c76e69babb03cfa4b6f70a42841. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:14:49Z), 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/USCGJ2110589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5c6a2f4469f0cc611bc3b4b87ad39c3948f7f1681ba411939acc9093ae6483. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:07:24Z), 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/USCGJ2110590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80928833ac70070196042b17953a1ed2098a2acb438bb22703dc11b52b61e591. 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/USCGJ2110591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50120a7e74ee53729d85b8166216dac547ea24e2bb2d398473bce57e5c2d9d1d. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/USCGJ2110592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e6cf1662eccb8ca74820c6118ea25d5f5b8d71f359f45f32650459aa0b6548. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:09:49Z), 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/USCGJ2110594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b277c4ea36fe2f6d651250fc5f086b91d14c63205ebed97e5fb0de4af8cea92. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:42:12Z), 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/USCGJ2110596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4004d4afbb72329f65329d2787107d24197997244659beac2f7c79e5ac2d408. 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/USCGJ2110597.