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 0x8fd62ed13859ee66fb5c570bc5310e0dfa6286da5298b453a81b9a601566ac87. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c53d27e2-5a9f-479e-a9e7-050031b8e386.json and https://artists.proofprofile.net/proofs/artist/c53d27e2-5a9f-479e-a9e7-050031b8e386.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 0x7b816210965583d25663e852c7071dae7a2b60accaff47019bec93a5546444f5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM4TW2509171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f217f4bd97af0853b8b3c071031520a72e30f30ddad212be7030fad9bf38ce1. 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/QZES91935914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d7bd3bd082c01f042940b433baf2a7797190073d03b22b049eb238c2381d6e. 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/QZYHM2403400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbde6a23c0fab98de131452d3530c01c8e25677dbb827019d9d9ca5ad2eaddd6. 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/QZYHM2374489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bab2e9dbf124930d7456cfd6e8db97772ea8fa989a1b34054ace34d72b0377. 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/QZYHM2373843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8483d6373fac237255138598a751dd7d6259201e7f0f17eee42a53613cbeb286. 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/QZYHM2373832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aeb5cc0d40dbb8549bf98096fe55dc7d787259d701f81864d7fc209fa6ff763. 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/QZYHM2373835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf2229351ac0768b4c4eb43b5b6c0f29d95292fc16f0aa66d1cbe359a66315a. 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/QZYHM2373840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e59eb2428deee2cb62cddbdb235d214a635860bc7d90839b2e3020ed2bad61. 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/FRX452224818.
Hữu Duyên Thiên Lý Năng Tương Ngộ (Dứa Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7df5d6a4703f24abb77c471766ca393a2455a1dee017ebc6fab0916cf51914. 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/HKK972226484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81dcdfb62fa17b4000a4b691899d3f9e95cd4f2583b2678702ab9c3f6dd9b183. 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/FRS182149356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f9fc1e16aef995a8f74943d421adecb12bd430b320c96a0c224503ecf3b370. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX452124401.
Đi Qua Thanh Xuân (feat. SING & Huyền Trang Lux)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc834c77c9f559572b26b9ec15fab42c6925076476bf6f0aa819a92ef55787199. 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/QMFME2298333.