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 0xca183f7f761aeb4d029dcfc09f1b44755d602284f9b92ced813a91a2fc1bf66a. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11532fb3-f2d8-4717-b480-904355835c89.json and https://artists.proofprofile.net/proofs/artist/11532fb3-f2d8-4717-b480-904355835c89.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 0x71ea2ea3c5ff385c933411098dff4efb96939c99194ec4526b0069818e7778f1. 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/VNA1M2288804.
Bình Thường Nhưng Không Tầm Thường (Remixes)
Muốn Cua Anh Làm Bồ (Lo-Fi) [Version 1] - Remixes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad64761cdb411ff75d0c9ac6559a3b7612f4119360fbdbb30bfd385e8f7713a. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/VNA1M2405286.
Muốn Cua Anh Làm Bồ (Remix) [Version 2] - Remixes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91a455b8601b585fd6725982624ae07562fa8f37b84e614237bed239a58d67d. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/VNA1M2405287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1758214c9d1b96133f43ea9ebd9e80c40d26cf9aa80b00d33dea0941207335. 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/VNA1M2405288.
Muốn Cua Anh Làm Bồ (Remix) [Version 3] - Remixes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff0353dc18ed4e54344bc3572d237424540f7ead2ab429e5b338e595ee24fc1. 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/VNA1M2405289.
Muốn Cua Anh Làm Bồ (Lo-Fi) [Version 2] - Remixes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75aad79aea6e96624d9c18726c5919dfc904eb4b0c84c31e004e85c357a8c97d. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:00:09Z), 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/VNA1M2405290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130e8324606f5333aa3bea9a696146ea56f02be017d660ce55b2126a95aa8070. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/VNA1M2402630.