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 0x313be48142dfa213e399289c84466248f2b234f19cd4b27f2c5bd9bdffe4620f. 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/e5d76bee-3a7f-417d-8c02-7af8314f6fcc.json and https://artists.proofprofile.net/proofs/artist/e5d76bee-3a7f-417d-8c02-7af8314f6fcc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mở Lối Cho Em (Huy PT Remix Version Hữu Công)
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 0xe60a1168e1c3cc47394474183e17cc12fd16d29e0787e8a076fec03a65069e2a. Chain 2 (Bitcoin): anchored in block 956775 (2026-07-05T10:41:06Z), 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/QMDA62484742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60a1168e1c3cc47394474183e17cc12fd16d29e0787e8a076fec03a65069e2a. 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/QMDA62484742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff774ec96859595942b31141d3b1d0560ef1a36687992e9ec5b8918777ba7ddb. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/VNA1M2401044.
Dưới Đáy Vực Sâu (Huy PT Remix Ver 2 Beat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa80a482e414a4117ced2e4a689a1eca0a86aab03a63f0152f414604ce6f4737. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/US38Y2510695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20fd27d9d96a7bf4869af4a38d111d84431bcec7beaaa2ab00616a4fc6f710e. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/US38Y2510694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17f45868e1d94907b9bc40fac0e07790d69818605275a9110c685bad3abf6dd. 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/US38Y2510693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2ee432ad300c6c1c1c9721e2490fd5c6c3751f80398bd999a0cd1de81ac461. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/US38Y2510696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4312b4dec0788e009fd0608307abb1cb53060d5cddea52da046124d875c29257. 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/QMDA62484710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371f910d1c9b84511ffbef0ce1e70a4219a5bcd7498b118fa8d73d4b36053ff7. 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/QMDA62484687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7873ee54eb3c3042c52ddad445d9aef02e122dc9137f7dc36c5a221feea0d84. 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/QM6MZ2538140.