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 0x0333cf30e09440a7f5991fa8375597671c19c26aee956c0eb9d4b12ee2bc44db. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99b5de41-7168-4018-88a1-54fd2d8c83e2.json and https://artists.proofprofile.net/proofs/artist/99b5de41-7168-4018-88a1-54fd2d8c83e2.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 0x6e8b6155e17525dd561dfa10267f75febf8220dfc592a39cedb83052d3d49a9f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QMFME2298700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290964fed85f0a9b1c7dac3e036c929c7113bb380d96e5294e52ea79515968e9. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:51:00Z), 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/QMFME2298866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b928b09a4e46b3d41de1343f870686f22a7fa212ea5933a79321b87ebf7f5da. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:37:01Z), 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/FRX202178432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237a212d52810956939143f3673d0cff6a489ab506c8f7a94b13c164300c5a32. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DGA082230092.
Trên Bàn Nhậu Dưới Bàn Mưu (From "Trên Bàn Nhậu Dưới Bàn Mưu")
Trên Bàn Nhậu Dưới Bàn Mưu - From "Trên Bàn Nhậu Dưới Bàn Mưu"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834c65a08f3b64df79cecd073ecad1a04e8e384ca3fd800e46244628800a306d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DGA0Q2397098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31783f8fca51fcd62b6e53a9642db369caf2a128609f751dc6a84d4b7db14a53. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/FRX282406117.
Enjoy Cái Moment Này (feat. Tez, Anh Tú, Vũ Thảo My & Nhựt Trường)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82a6afa0abfbf114c98636b24c79078d25beaacf399d39a8f6b5d1cb8c7202f. 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/US38Y2417296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16dba200e5cde3c718ea4b8185e7b5d96885a99567a3be0f503aeb061dc44840. 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/FRX282113084.
Ngược Dòng Nước Mắt (feat. MegaShock & Vũ Thảo My)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3227c6ac5c14fa6514b964c9f4bb368a4cb14e5bf167e7791f377ef7bec284. 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/US39N2306135.
Cậu Ba Lục Bình (feat. Snoop Dee, Anh Tú, Vũ Thảo My & EVY)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ab80a5e7230a705a43cdf95e2f2866774eb4574fb1313d9c1658c55d1d9405. 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/US39N2308947.
Không "Chỉ Là Thoáng Qua" (feat. wAvy & Vũ Thảo My)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd207a160c585836df556ae34b42c408a28fe57e67dd53c86d0d2a3276046c1. 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/US39N2308949.
Thanh Âm Miền Núi (feat. Double2T & Vũ Thảo My)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe129515a72ff1acdae9c28937721f327e2a81f5f189fdead6ed03360c7d1d3d2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US39N2308950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3227c6ac5c14fa6514b964c9f4bb368a4cb14e5bf167e7791f377ef7bec284. 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/US39N2306135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a89dbba0cebe21e0db17dcefd0e8be061867569e8140e4384cfa8da56bc5f73. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/VNA0R2400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da823a37dc47a56e4c3e043c1d51c003ebd74a97c818397a04d4283c2e62928. 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/VNA0R2400049.
Enjoy Cái Moment Này (feat. Tez, Anh Tú & Vũ Thảo My)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38220e00ededcf6d42762f5193a05438d1cece750147b4090106ed0e705baba0. 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/US39N2312119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ab80a5e7230a705a43cdf95e2f2866774eb4574fb1313d9c1658c55d1d9405. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/US39N2308947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd207a160c585836df556ae34b42c408a28fe57e67dd53c86d0d2a3276046c1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US39N2308949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe129515a72ff1acdae9c28937721f327e2a81f5f189fdead6ed03360c7d1d3d2. 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/US39N2308950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235eee1e70e690980deea0efee81ab88d854279d2240b14a57078a8bed91e46c. 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/FR2X42463837.
NGÂN NGA (feat. Isaac, HURRYKNG, Negav, Gin Tuấn Kiệt & Vũ Thảo My)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65471522a0707aaaae980599553aa3bcf603df60857933876183fce2b651e5d. 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/US38Y2418915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6189d46db27eb8e7142512c6925c9e8d563636f1ff50be591dc16f891fe40694. 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/US38Y2504854.
MONG ƯỚC KỶ NIỆM XƯA (feat. Ogenus, Orange, LyLy & Vũ Thảo My)
BÀI HÁT CỦA CHÚNG TA (OUR SONG VIETNAM), TẬP 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d0fb5760775418d9d7c632bb543e5af2ef689c38a85307c62b70fcc2962ee6. 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/US38Y2423337.
Anh Không Hối Tiếc (feat. Limitlxss & Vũ Thảo My)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa735c32f150479492b48e5c6757e87229e0759a03bdcc4f9ac8c9e45bfc2ab43. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/US39N2308506.
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 0x90416d5128fc32e9cbb435f1b5063a9c5681a30fed9d9e3ab1a109f081de98f7. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/FRX282113934.