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 0xee456c859eb564f9186cb966bddd44451b722a037bffa0e54b978380ca7632ac. 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/28cbe21a-d69c-40fb-ae90-543507cb13a5.json and https://artists.proofprofile.net/proofs/artist/28cbe21a-d69c-40fb-ae90-543507cb13a5.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 0x77f5542ba5b6590071277931742abdeadd8593a56ab59255e1de6a2d80a93362. 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/QM4TW2077319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648517b03c1208cfcf823311207a17436d81adb98dd0da0029b251a45a10b3c9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM4TW2077324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10569789d993a74157c80698d54ccebd8dea4d7deb451807e78de1bde73a1b3e. 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/QM4TW2077136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b2909028d1ee452932ff8fbd4b847f5e378e1721e51fb980c9977e6a0dc947. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QM4TW2077137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08e2843a17757fa6a6d7b0af35e440822f5ccc2461777442e767bb87cde44f3. 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/QM4TW2077140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfebe225b59e602d222559ed782cba946c4ff1b57576bfb8262e8c0e8cb9eb1af. 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/HKK972224735.
Duy Nhất Trong Anh - DN Team Remix | Em sẽ là duy nhất duy nhất ở trong anh
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18613bce80f261ca82363f0ad46b3a780d301b32325625a42d1f66ea947dea99. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZWBE2273430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e14dc9b89e27db067c502eb06868db1cd5ff8a908b5f83200c7de51561fdf2. 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/QZWBE2279544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef88400f5bbaeee927f15e4a1afbc079c5f671bc3b8c6650ab96d3884c7e0a4. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZWBE2354864.
Mấy Đời Ai Thương Thân Cô Liêu Bàn Tay Lam Lũ Sớm Chiều Remix - Người Thay Thế Em (MUS Remix)
Người Thay Thế Em (Nhi Nelly Remix) - (Vinahouse)
Hứa Đợi Nhưng Chẳng Tới (Cover by Hoàng Lan)
Người Thay Thế Em (QV Remix) [Version 3]
Người Thay Thế Em (QV Remix) [Version 2]
Người Thay Thế Em (HM Remix) [Version 2]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdcaced2bccfb5916455d570bddb45de3b65cc7576ed3109a99a2f280ab01a5. 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/VNA0F2304342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33dbd0c81aa5b23a014ecdf8937b74840b291b5d2adc24cfe0a07e22385a450. 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/QM48F2465112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791dc33a74b01e2572ad6252b82d07dc36194d9bdb2c7598f3e4eed8eb820e35. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QM4TW2085350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b766aef3873af60595daa664922653529336710a6cf66173d364e8f2e37acc. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QM4TW2081616.