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 0x309156d3af57433a3eeb5fae39f336cf2f46a4216075881540c1f489c08a4324. 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/72f17539-3f7a-4aa3-8344-c6a7597812c8.json and https://artists.proofprofile.net/proofs/artist/72f17539-3f7a-4aa3-8344-c6a7597812c8.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 0xcd08987d63349c0e14a199854d111fe3097be4db60e4ec2d4386d297a9f79cbb. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:04:52Z), 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/SGUM72100710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67c90f2ddd2b2792012e3c415f698e8cf1d66bdaa690f2759dffa8c6bfe6d02. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SGUM72100530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a5b9e3e72e3dbc2623be3e8b1f1e0529ce47dcee1556421668472626431bc4. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/SGUM72100473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a45dfcbca1cf9b2bdeb4ff76e22f017ea7912226d7b83db40a0ad59e2068257. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/SGUM72100390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555487fef89db5406b81fe4b8aa9179e2fc2e5f525a0227d3b945fd352ce7b2e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:09:26Z), 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/SGUM72100344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5532006dcaa24e08fd3fd31f27fb65d02f08e710b773b08291cdd4fb41a40a86. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SGUM72000317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c4e7f130bab10ca9b330915f87041ffde723b064d3007d2b88bdfe3a92f317. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/SGUM72100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12a44c78f4b48d55c65ad7ce22e8d04fb3764cb999a3df6fcbb4b117333917b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/SGUM72100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5bade4c43fe9e1316b0e845c58608e0db768578707f38fb4df0f6c3a02c1b5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SGUM72000291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3885d482482886a04bc5eb3a20306a3209c2f99c27b28001677a43c8ea751a5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SGUM72000292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab288d9fc7b7d5476625aee540881aee49b93891c21f815443e9cdd791de602. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:36:20Z), 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/SGUM72000296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa023c12415a751be89cfd711d98145fa42b601722dcd6891dd4b1145a521a3. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/VNA0M1915915.
Khi Người Lớn Cô Đơn (feat. Ali Hoàng Dương)
Ước Có Người Bên Tôi Mỗi Khi Buồn (feat. Tăng Phúc)
Thà Rằng Chia Tay (feat. Phạm Quỳnh Anh)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa023c12415a751be89cfd711d98145fa42b601722dcd6891dd4b1145a521a3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/VNA0M1915915.
Đừng Làm Mình Xa Cách Nhau (Glamping Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178ccba675db8142018e44cc8f44272c6c2738dceede3477b3df99bdc03f84ae. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:50:32Z), 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/US38Y2500365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe28a536bdc9d5523933c2c1ffd5563ffe10d5a26f95a2082ae653c847288e9. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZNJV2572594.
Gala Nhạc Việt: GreaTET - Thập Kỷ Nhạc Xuân
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96ea2f8b2984c78cb52266d19d8b5597a79ca3666e424e4e076d31648e67196. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DGA092208001.
GALA NHẠC VIỆT TẾT 2024 - NĂM MỚI RỰC RỠ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7d5b2a3f77be35ec253da03dad839f0bee123e1cff296671d1d2b79c640d7e. 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/FR10S2458305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641784cb95df71da9534a36dba2b8258d59f51ce6a72b9aa7f7567b242a7931a. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/VNA0M1836064.
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 0x3b864deb21076d13e211d2dc0ce718dd061cea17069393a1d66f4d1524f32b7d. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/VNA0M1821224.