MXJ or mxj can refer to: Minna Airport, an airport in Niger state, Nigeria, by IATA code Miju language, a language spoken in India and China, by ISO 639 code MAXjet Airways, a defunct airline base
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 0xf258b9a38b162c5f6dddb5951fdc5caa59f66a4a734db71dcc424d61879b3c19. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9d751ed-9655-4ad3-b6bc-6b1dcb17b402.json and https://artists.proofprofile.net/proofs/artist/e9d751ed-9655-4ad3-b6bc-6b1dcb17b402.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 0xb2b2f0b060d2d8c72d4f0f13177b5d653266845e8310ba10367e1fe835e3ef1a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CAM372400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a16b554bdb895ca23c1d0c991b3f16247fcea748034bdde95bfa5d7c50bdf91. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:58:40Z), 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/CAM372400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f642da90af4c1a04e2937d72bb51bee6825e3d2f5730f2958b30898a8c3a03. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBKQU2443023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc750f54212b5c5a12889601fb9db3ad2aa42241f72b13efc3fae81e14b04cc75. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKQU2390624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a49258ca31ec74c7937ab9258126c4fe90cfb0ce6ae561beb68532cdcc2bc4a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU2363811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0781a9aaf834494fd38d705ec592a81964fe8d61fb58939ff0d1ab24ec77f3b6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2290367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e31a5bc4f1f9d96ef68f837c70eb808a8e3fc67012f8079fa0b078ce94cb29d. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-21T22:50:13Z), 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/GBKQU2278489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485f0884d3502418e379216c8e0e7be9b17bef656edd029fb11dc8697ea935da. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6L2279487.