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 0x54c00204d9c9b3f697df67b8bed68e4a777f8e8fc5e295f7c0ad019893f5b758. 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/d70f33f2-7214-4566-9ada-d479891870b3.json and https://artists.proofprofile.net/proofs/artist/d70f33f2-7214-4566-9ada-d479891870b3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tôi Là Ai Trong Em (Đồi Thông) (Taxi! Em Tên Gì Ost)
Lac Nhau Co Phai Muon Doi (From "Cho Em Den Ngay Mai")
Lac Nhau Co Phai Muon Doi (Music From “Cho Em Den Ngay Mai”)
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 0x5ac5062da8a4bb239b0ed84b2964e95d988a69fc89cdca320511216ac7216b40. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/FR59R2082292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2553b5afae7073bc0953dba91de66f04797f29de54159e099317d80a692fa1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR96X2014115.
Cho Nhau Nhe - Suni Ha Linh, ERIK (Original)
Cho Nhau Nhe - Suni Ha Linh, ERIK - Original
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb050b432d330b7f4c58df0c2eea54567afc66b74abfe471849ee56be3eee5636. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:08:57Z), 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/VNMUS1899701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a7786ff7c3616d95a16ae5c03aacf62a62131cef99ba1e2b855fe695d45e35. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SGUM71800093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873e2bee149736a95358fa193c9a3d1564f27a8f2a5a697bfc7d67447940b808. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:27:51Z), 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/QMFME2245289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152b5ccb59a87144c121b9af9340c340ffe17728741136745d0364e6ec2d5318. 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/FRX872168829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3550c73600c27a04074ebae91bc2b725f04ffee50f624964e1805ac10b8d86e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR59R2281316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e01aa001c6a9c5f3c5320f5cfbabbbdc85652565b5dfc005229f008c15d359b. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:00:33Z), 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/FRX282227231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f5596427a1593961168ccd30bac502176fdca74432113cea448fa7dfe5285f. 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/US39N2309594.
lyhoptinh (feat. Han Sara) [DJ AM Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed164edde4f4cb1d37f2a82e530979d523f79a7ea11445df71fc8439d4acec3. 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/US38Y2406341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa457e951467d0140ac8f1bb5d2e605d5bc4913e84077e2e66fdba2cd789e1cac. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/US38Y2406342.
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 0x43636fb7ec8561cef0051f9aaec56fd32a32c82ce7b551ac227aa4510e617a1f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/US38Y2426165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af5b89ed4ea99b2fe5f8a685df2074ff195554f58d740a1614cfd736752c78e. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/VNA0R2500361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d85c923c0c435188d609d7b49c00c76208d83639be176f583c3a4f3241754bd. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/VNA0R2500776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58df0ff036e3e38f4c13f58aba577fa1dc71fbb8991c86168a22f611c03086eb. 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/VNA0R2500790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d1f5fe7376942a2796809c5b8af1c12a8568a3ef9143f8bba5a87692b6c9e7. 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/VNA0R2501283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa661239347f1a79815ebbdc3e4647cb4b700c1a65a9754fbac9b1a2085d9d21. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/TCAJO2572742.
Tha Thứ Cho Nhau Được Không? (From "Chốt Đơn!")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6092ed2977e4d09a428e8f0b6159d1081fba39421ae3a0d7e7d6d08a74bbb2. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/VNA0R2502734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7945eea8327735fcaa40111accaa3424dbab2c9f96199c5c44fae684de92596. 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/KRA381901859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6368297ba7ed033534597691a3fc5a10510bddaeb04c2bb914d97b92a0eac2. 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/DGA082377919.
Liên khúc: Em Không Sai, Chúng Ta Sai / Lạc Nhau Có Phải Muôn Đời / Sau Tất Cả - Live
Love Songs: Private Show - The Duet (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941ce4f45aa88004bdd75dde14c9c94482369498e06cd64f6e5eab6fe7b584d4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FRS182065677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a1efdf12ec822f59b0cb241e09d9e9c8de14da67bd184dcec0299360ab56e6. 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/VNA1M2284589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0d7e2e364cac6e396b2f5c9b2a732efafe1f12347781d2dbaed49ea76ce22c. 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/VNA0R2400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06912f2ea559141069208f2be7ba28316edd26f4ebeae67c719093606ec5fa8. 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/VNA0R2400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf617b1084b14b1dd77a90b09acb2b8f317d6bf1b6c5715adad81bfd4d778f300. 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/VNA0M1911406.
Liên Khúc: Câu Chuyện Đầu Năm - Cánh Thiệp Đầu Xuân
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd051a941d8890a72cb75f77e350dcf301f650ad37c53010d78b42f475ca25bff. 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/FRX282113937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749644ac65ab7d78e0e0ffb0940ff409fc1417c123512168c7f72135d59bb2f4. 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/VNA0M1935224.
NGÁO NGƠ (feat. HIEUTHUHAI, ERIK, Anh Tú Atus, JSOL & Orange)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59715b7469885d5b017bcbd88110c405e628d1d26710f7420499e91acbea3cc9. 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/US38Y2418913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9e1923a1107f7c913c3dd9a13081fd7befdfcfaee0ea763d8da830fb7259f2. 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/US38Y2504852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb073e1b56ec3bd369f2a009cbb943b62da8c3adfc999d73950bfba400af2c4b1. 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/US38Y2504863.
GALA NHẠC VIỆT TẾT 2024 - NĂM MỚI RỰC RỠ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc6334b3c0a3f81fcce75f0120c59ac352e7488798dfce1afb4cdc977233b2a. 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/FR10S2458298.
Gala Nhạc Việt 10: Những Ngày Khi Ta Còn Trẻ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721b7d6fa8cf9a8b57a7a1205c518285725ccd119b0e0b9cc29ba3664471c549. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FRX282113129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518b782695d285b6cc0f868c87d94c63b9d6d6dd4052e5c124eb6d76c89bebcb. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/FRX282113137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed18c6670916bd63a07464b2d04c5adf4ac6536fa9e7420adb321741e6a4acd0. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FRS182065678.