MZG or mzg may refer to: MZG, the IATA code for Penghu Airport, Huxi, Taiwan MZG, the station code for Muzaffargarh railway station, Pakistan mzg, the ISO 639-3 code for Monastic sign languages, E
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce50a5de6d4fec173f1ffa561f773523a7afc43dc8cea986b98d235b26e0c6a4. 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/a1aa4538-a063-4891-a061-f6d600a4ee77.json and https://artists.proofprofile.net/proofs/artist/a1aa4538-a063-4891-a061-f6d600a4ee77.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4f520a7cbe15978fc2e41a39e539a744453c048d31f58512d74b35566089cc. 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/QZ79W2000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0fb15df5a94cb4f76bbdee62b506816aedb0d3af44d41138e39420b62761e59. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM24S2201626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb5450ff6a1a9b2f30b64fbf68caf8a0a5586c8cc580d4313cc35d1ee0e4c2d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM24S2200558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf636fd5527fb8442e794500680b8a1d3a6887abd274006b1bd39fe79bc6bb7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM24S2201528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7deea4f79a24f44cd621fb0cd64f06b5a7f091108c0b805c3262bad909b176. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM24S2201625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd90c39c105063e5a59c5348bbf8723da7679a6a497820defb021fd95da9540. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTGW2100628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf562d3f6263c17b3df5b0d351760d872d26fd7cc783c66d4fdb11585216d3c6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM24S2201623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fdd0dbb216081c5a31db1fb49ab35a84b01c57370a721e9a1d004253c64750. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM24S2201619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c5dd27cb3c31683d0fd87b7cb4e300252f7dde57202b99091818eca4c66f49. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM24S2201618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03a43f4793007feeddb672a5927832e346f9efc8312b63f5ce2f9a8f1bcd87f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWDD2438066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacaae536ed4eff6ba2b89440fab6be96a63d4f13c45d6b1d3b0f06869b0eda5. 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/USA2P2266206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9fe67ed1f007ee6d191a74f02de1ed942c8bd2b4f9375020b65980a5fbf9d5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USFLB2303816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8f5129ab6eb5f2cb4b2fbe50c9da4dcdc1d2be1abfbb2f1b2108d28f383341. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USFLB2201310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd68f078b7e03cd69d5d5aa318a797cead92aee2c7e0feef99020d4bcdaeee33. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USFLB2201320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaec32cffeade47ce24d7db5d1c4e61b6166c0852d4ec486be5856485f0a89a8. 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/CA5KR2069709.