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 0xeb297fde6cb02b98c52df00bed6a97cbddb7776ff447b5216a9e1bf1c1d50937. 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/fcfc6ef8-77e2-4d52-a32e-467798ce8ed8.json and https://artists.proofprofile.net/proofs/artist/fcfc6ef8-77e2-4d52-a32e-467798ce8ed8.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 0x0f035a4e72b83702e33130eecff321718fcdcd652538109f9c17d94a2567b57b. 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/ESA011982985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8471a3ab15b50af1aeed101023e2487480c35771560440a52e5dddcbc2c5a4ab. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/VNR011044879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdd408c79d6db86ca1035e99b5a35b73848b3d98a1bc19bc26f2a7d64f8c312. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T22:58:34Z), 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/VNR011044880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03f2e35ea128bfdeff428d0a8c34e1e74dc6db8e97c188eb1581790276cc63e. Chain 2 (Bitcoin): anchored in block 957531 (2026-07-11T06:55:18Z), 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/VNR011044884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842b9d4d4fac8cfa2c01bb35804e0e9b831f44817e328e0881599ec4cda39cfb. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:02:55Z), 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/VNR011044851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb255698e00a581fe822a2be4eab022117e7c86973ebb37a08349f4a030fd7265. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:00:15Z), 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/VNR011044833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35df830f7e1e0e78e15c30b7ca2bba85531be9a448059c387b5b0bb8c9680125. 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/VNA0M1906247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1259ca85bcfe8c752ab5779ad57cd1f46f5ac4da8c2a124ba4ec2b5f0cefcff3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/VNA0M1906248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84287051f20f4c16b4ced8d1614c768ff8d588117f9f3887b17c6279404b2fdf. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/VNA0M1906249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929119e9cd0d6714969aa554fc190fc3439dcc7cb36f935d223852387b51361a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:23:26Z), 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/VNA0M1906250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b7be67fc432b392296e459bac9baf95fc8d879ec9207192490ee9cb3b1e069. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/VNA0M1906251.
All the Love (feat. Duy Anh, DJ King Lady)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a24da86e729d69dfe2f83e977a92d868c111502b4923331461bc1b88b142c4. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:27:07Z), 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/VNA0M1907129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ba5b9c69878522fbd5e8007c01ce09afffd09a5007c3986e073fa36e2665cd. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/VNA0M1907130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8b35f236b4da423f27248aa3c80613c508d487e53211c7127e8f94d3f2b15d. 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/VNA0M1907131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb222557395fd97c82379bb9d78104b4e28ab38e68d0ec0014aec125ef2188873. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:54:24Z), 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/FRX872019517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4600c15cf91a3cf640cbcbf8b0901afdf871345f876b6b1d6f37ce08fb2ba8. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/FRS182046195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4c5721bb9d439517d28994da3bb1311eab10b5928feef9b3f43562d87095be. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:36:16Z), 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/FRS182068195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2595e9458ea3b5fb32d6316fd71f47462a3bc54625408d98b4506a08f5591e63. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR26V2013427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33e50dd3ed4ac4aa7d87cb0a0991fcd9c70b585b0f5df8a783366fbe1d07877. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:54:00Z), 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/FRX452247593.
Liên khúc: Hỡi Người Tình, Trời Còn Mưa Mãi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06476f5f73e3f720abb06f9f6947136770fc347dc10d7d4d4ab42c04e580a0cc. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/FRX452247597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91a1daff1152ab2c31a004360035f566a2a67473d90cf878d6198dde4286ba9. 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/DGA052256149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5ec8183bb48548e00ad1486597f028dd36104e1d0f3d2dc7fef484217b7a16. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/VNA0M1939907.
Mashup Xem Như Em Chẳng May - Ít Nhưng Dài Lâu (Xuân Phát Tài 15)
Mashup Khi Giấc Mơ Về - Giấc Mơ Chỉ Là Giấc Mơ - Live
Không Gian Cảm Xúc (Mùa 2) - Tập 8: Nỗi Nhớ Nơi Con Tim Mồ Côi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cd4b4acede97d24bfa10792b66ebe6520fbec372546d975632b34b6e931c47. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/VNA2E2311550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefd0a42a5409a0a1338ed1c8350de992ef07a5d3538b0701d5073ba04f4074b. 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/FRX282113067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f6d231a3e76afa0b9234dd5926df128f338d3b778fe6d67a684f4638498926. 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/FRX202171705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc844d764c918852404a92d68a98ca09689aac9de7715c9fc03c179a278528af6. 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/DGA0T2411627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6351da6adf2c0c1ff3ce8a115026f90126cd60597a130cf22e3d88b7248eb9b8. 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/DGA0T2443007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd94ee1d2fe8e9629faa9c07ac6b27be3d257afa7a1b8d1d90728a63f8befe35. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/VNA2E2311552.
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 0x2aaecea7ff787c652b6b723c06024ecca01c9907a7260919a9f9880bf049dbea. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/FRX282113080.
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.