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 0x46cc2cbb7b2aca9a43cd9745383df94f5913351522d30ecc53bb1739c8f48452. 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/2951d7e1-0fbf-47c0-858a-17eb2c219a74.json and https://artists.proofprofile.net/proofs/artist/2951d7e1-0fbf-47c0-858a-17eb2c219a74.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 0x582dfae091a3f8b1beb03a9cfd01722635ebf877229a711b1a1eb94b4ffa4973. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/FR96X2190261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93839f297901de5ec3ec0a34aa2212bea9c4e8cfc849397b5b6b2aa17da4ff2d. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/FRX762117538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa790012a1c508ad9cb745dda345259facdbf48eb5dd12aad41d13cf1dcd02bd3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRS182120654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f38d76a9e699ea26308ea0cf284bdcd41110bb7776c5f1b912a52a44d029a2. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FR2X42263938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04f4501f48f8ca3304812e5a7d08cb83895edd3bdf5365957821c7e7ae9b92f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX872279288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c01c0fc30154bb55ce62be4a763e53c388c3285be194812aab57adfedd19d3. 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/FR59R2392827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfccfbd0a2379dab41b11821bd75ade2bf1dd12f6c147448f8300ce9907997dd. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/VNA0M1933444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ea8b157af8363b17a75ddab8b256a05df6cb2c2ca03a8da4e2392bc53ab896. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DGA092499254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe471dac4ca9a918b564eb1a08cff288a7a8eb91db0a446bb79dc4375cd153084. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DGA0S2406146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfc72409749454b450179a363c3d61f487f4423afb9448c2b0feaea1bacf4bb. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/VNA0M1941349.
Bừng Sáng (Theme Song From "Tử Chiến Trên Không")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1744a801e9e23f8c228d9d3146fccb8fdbc802497452d510b0e0c984d0d9fcd. 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/US38Y2422826.
Winter Blossom (feat. M NAIVE & Abyxx) - Vietnamse Version
Winter Blossom (feat. M NAIVE & Abyxx) [Vietnamse Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3ba3301972dfe5c3135725fef8790f14834a6accba69225dc63ee7be8233a7. 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/KRMIM2464644.
Winter Blossom (feat. M NAIVE & Abyxx) [Vietnamse Version] - Sped Up
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5143249322cce553ed503d9e9a57b207d2ce9348a23226714011f0c011721c04. 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/KRMIM2464645.
Winter Blossom (feat. M NAIVE & Abyxx) [Vietnamse Version] - Slowed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c091fbb3cb63f73b6ce1db39564801d2f475219cbe118d77de0a60ef6987e28. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/KRMIM2464646.
Van Gogh (feat. Abyxx & M NAIVE) - Vietnamese Version, Acoustic
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f669e2be3a78c8ff9e32f6faf7827ab95aa80dd0bbdd7cca5db948d8c1983a. 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/KRMIM2457439.
Van Gogh (feat. Abyxx & M NAIVE) - Vietnamese Version, Acoustic, Sped Up
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cd933ed1bd66097b189d168a204a7e624572ae65338ba5d4cf31528775679e. 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/KRMIM2457440.
Van Gogh (feat. Abyxx & M NAIVE) - Vietnamese Version, Acoustic, Slowed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fcd5ab1b7cd9392bdd50012ac576cf3c31461e049ed8155cc97f7cb4555bf6. 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/KRMIM2457441.