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 0x4b95f62475e44d854982b90610576929950a2b9ac7a9c12b0a886c7c0e90c99f. 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/9d36bc17-8eae-4778-a75c-6bd31fff155c.json and https://artists.proofprofile.net/proofs/artist/9d36bc17-8eae-4778-a75c-6bd31fff155c.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 0xe46ecd9f7741689342d1942940c166c854e4363ce7a4c5fc6695184ed322586c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBENT1732111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d417e43d79fab485b9dc279fc06492a0852e069c31f3a373ba00f62458b4d3. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/GBENT1732114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef9d1a3a12ee738b7b5a5451465c9d484698aca1df599071940bcadf005fd1e. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GBENT1732115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f985799ecbb78e4a0eaea7709364bf287c7a3d8903522ad0f315fbb4c858ef. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBENT1732117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579240927bd109d439e180326ec48333d64fa8808a3973b8cadd79e7e8b3110c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBENT1732118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bf90d89db462d12090b25b135e2e28092a902fbbf1ca99a24e5a281a51750a. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:01:06Z), 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/GBENT1732126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6db1aa1830b0e837328bd9f8488aed87908875ee927114a3bc9f0e473ca0852. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBENT1732120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03baa667817d158d398feec3ce6b29afd38a1cf7d5715e2b07d53b35ed48b95e. 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/GBENT1732125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ccae5624a308a5fbbf390b72a3def5a908d1f649d004351e03a0fa6e041bcd2. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:03:20Z), 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/QZZ7S2486229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01aa76b71b8446ce10334a754db557ada5bcbe5d7bef3eb43b2de05ffde66564. 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/QZZ7S2486233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668ad514e78f6cef93601a662d7a6e29e12340c2a77b670f251b516c0f984946. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:07:49Z), 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/QZZ7X2497062.