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 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 0x7b75e9a5c935e7e3fc30cdc5186d26e4033ed351f8952056b42cc6d40a350b25. 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/c42457a0-2bf0-49ab-8bf6-00e9bd576ed1.json and https://artists.proofprofile.net/proofs/artist/c42457a0-2bf0-49ab-8bf6-00e9bd576ed1.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 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 0x78a640f8348536282901b24097c832611760a47b87e3d69e3086a7042cc7ccbd. 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/QMDA62230112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7951ba649ff01b9de7e46cc1a447cda5774f0224c13c11eb5ee0fd0b54f01761. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QMDA62230101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038c91e63aa446f493302d54e19ab6c4e3fbd0a4b4f85b055d883b3e81993995. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX282246662.
Mình Dành Cho Nhau Nỗi Buồn (Lofi Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f33b835fccbfc30a8adb7b8e7550fd4f3f9b96b5bf0e841ba81492ab80f014. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DGA082210091.
Dừng Lại Một Phút (From "35 Phút Cuộc Đời Tôi")
Dừng Lại Một Phút (Original Soundtrack From "35 Phút Cuộc Đời Tôi")
Dừng Lại Một Phút (From "35 Phút Cuộc Đời Tôi") [Lofi Version]
Thuyền Không Bến Đợi (feat. Czee) [Lofi Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153aa68d7e948f3e3e440db483683463384f04bb2ff52a090c85c86721667f5d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR96X2427637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a813471670286736640b6f12dc20ffd6b33ce01f720b5eb6611b091ca669c2. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FR96X2440883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1610e1f52d600399ee32d66a66376e49532e5d1dc10f1785542cb1f3615320. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/QM7282450540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197803e363eb806194b45f00396db24d5a74e83a97a812eb3d7d6b0b703f8ece. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QM7282445404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197803e363eb806194b45f00396db24d5a74e83a97a812eb3d7d6b0b703f8ece. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QM7282445404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1610e1f52d600399ee32d66a66376e49532e5d1dc10f1785542cb1f3615320. 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/QM7282450540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3a48f6a72a703296bfedfe0c6900bc8b60a2a145da83460e72d6a48e911d09. 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/QM7282473376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3b69cf9dbd0ed7a17998b3cbc9beaffcd28ad3eb045c5429b2fa3c4e8ee531. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QM7282473388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0a5497dca88fc1d7c85bb8d8d274bc4c2e404b4d5663cf99c557d011717d8a. 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/QM7282473375.
Bắt Đầu Những Dở Dang Trong Xế Tàn (Piano Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968ec7a9478ef9432e5abd9765406f1e5124182f868bda1e155b30654e039690. 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/QM7282473398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098022f40d506d49abd8a9ba383237a5b8ecf3aa7ea855ad21d2b3ef6388765c. 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/QM7282473401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5676b2e9ccca9e0fa10ad4ddc99d7d297a7c680d1c30818e321579f37e5c0f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMDA62413418.
Tình Yêu Buông Tha Cho Chúng Ta (Melancholy Version)
Tình Yêu Buông Tha Cho Chúng Ta (Acoustic Version)
Tình Yêu Buông Tha Cho Chúng Ta - Acoustic Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43b8b0796456fc2f5752718a1ef9fc5d800e13f7764b4d105d60f349dca48a0. 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/QM4TW2502902.
Tình Yêu Buông Tha Cho Chúng Ta (Atmospheric Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8152ef2eeed94f92df50b08fb6e44dbffd65e5ef6d7605d537b2fb85453249. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US38Y2524709.
Chẳng Cần Ngày Mai (Beat) [Beo Lofi Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4caa413a13a2296f27859e1725ec5187df0bc7d7194d4d86625863d6b64af7ce. 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/US38Y2529468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf748fa45f90fbf772dcb1016257bd6866296b978b556cfea0a23fb864f34eb70. 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/US38Y2529102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bc47304cfc84eaa8ff39c13268b86d333340f0c461ee660bcf9f96cc3751c7. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/US38Y2533674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2467c9785b3b3838d94db059dd629f9e3fa6d33b1a2c28d1844544b3e29289d. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/US38Y2533673.
Chẳng Cần Ngày Mai Style Huy PT (ZZ Remix)
Chẳng Cần Ngày Mai Style Toann2k8 (SS Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a9a1a163621bdb200f3974cef9f09517457766f0fee6f7f7189d677cabfb53. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/US38Y2538653.
Chẳng Cần Ngày Mai (Beat) [HMC Lofi Mix]
Tình Yêu Buông Tha Cho Chúng Ta (V91 Remix)
Tình Yêu Buông Tha Cho Chúng Ta - V91 Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a7df134d19699c2e0e644c7b58cd439d2d93a27ee1d9dcffac05a52b24e0a2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US38Y2542462.
Thế Giới Này Có Nhiều Người Tốt (Nostalgia Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10761e03f3e9f52e9de372a47d56455951e9def85f6cce32012f7bed5720a2c7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMBZ92547226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b98054c13a9c0c09da970ac5bda39549a7eb1a479aaef981219259ccf38ca4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US38Y2554928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc14c29ca4eb4c0886e67d1743763b99f0e9d2b7e7989dc7a6089745975afdac. 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/QMDA72561733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdd79db27cc853fe6b38639de7a0b27cc0bac60d1ce23ff3667fad63eceb4e3. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/FRX872526053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7fa58d69dae6b87f4ec8ac1285bd6eaae7d3f4de8052426e99c6f064ec91f7. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QMFME2523509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6c29013a6f3d756bd0324b0b37731f42fec114461af6221555fb04ee85674c. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QMDA62439573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09c884f81a2ffeaa74f913157a97430dcd0662479a0bcf44d2ef93394dd08e2. 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/QZYHM2411132.