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 0x78d16aa329c234ec56c3c6a1dd03e2f16c48fa9bec3b3c6e7162bdad78e4ea2b. 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/7e086287-0a04-41eb-bdf7-eb213206b605.json and https://artists.proofprofile.net/proofs/artist/7e086287-0a04-41eb-bdf7-eb213206b605.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Về Nhà Thôi (feat. Rocker Nguyễn, Jay Quân & 1DEE)
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 0xe42121ac64827f95b3ef24ba46681d67ea73854c53cc1a54d6445359011fa831. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/VNA0M1847708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a4a112df5f5c52df7089bfa1114bacd37a257ebd260ea83f2f7aababa4bfce. 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/VNA0M1847710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe89f1dae4e436cecb0abc34c8a45de20ad382542c4c9269c55abdc689924c1. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/VNA0M1847711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bebd11103923dcbcaf3a0f065f2d4bbc0687442010d1b59c0200cd8d44f6b9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/VNA0M1847712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047c14077cdff89cf9358c716d8c9fdb8482b7be05c656acbc9891f0fad8f695. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:05:13Z), 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/VNA0M1847713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221c3769b9a7e08e1f91f8289faa482d89d98000327d0d3ae7f0b4eda6286e80. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:43:20Z), 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/VNA0M1847715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20087b8979f23cd0ee22bfbbd6dcfa699814760c691301f60fcdbe2ffab7f181. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/VNA0M1847718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791adad4bc283758d7d8fb31f5c12b4fc8a29f7b16aaad70a0107095013341da. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:56:18Z), 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/VNA0M1847719.
VÔ CÙNG (Vì anh thương em ... như thương cây bàng non)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc2d41f38b790ece28d881e2284d415bbbdbece212aed8e3b682100fac8784c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/VNA0M1849564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f36eb0347907f76b62a973ddc8a86f1750bc29167a17c40e8b594ee0886085. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/VNA0M1907001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1282370ab70412b6b17047563ff02127a328cfd0851036b63a811df3792e0a25. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:14:23Z), 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/QZFYY2518493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8304c88aa287412d8034b50ec7b28dc8257507f79622a38a5d39659c12677ac4. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FR96X2362508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8304c88aa287412d8034b50ec7b28dc8257507f79622a38a5d39659c12677ac4. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR96X2362508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3071ddd2fb4144033022dc5ccbec2cc4bb0848a83942063dd874037a7b4087ff. 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/FRX762437053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3071ddd2fb4144033022dc5ccbec2cc4bb0848a83942063dd874037a7b4087ff. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRX762437053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9831fb0c704d1d2296dcd0e30bdeea13718443720322328b6efcba922204f556. 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/US38Y2414635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9831fb0c704d1d2296dcd0e30bdeea13718443720322328b6efcba922204f556. 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/US38Y2414635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5374634b565d9af0ba5a1b70a61ab028a3ed3658303befe1c304468dd0e8a8f8. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/US38Y2418662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5374634b565d9af0ba5a1b70a61ab028a3ed3658303befe1c304468dd0e8a8f8. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/US38Y2418662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a6b5c2c9eebb0b700567c3e12112d358d00498b9d1aa4274b4073bff0b3685. 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/QZW9L2458803.
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.
ĐỪNG NGOẢNH LẠI (feat. Quang Linh & Phạm Anh Duy)
BÀI HÁT CỦA CHÚNG TA (OUR SONG VIETNAM), TẬP 10
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a372bcdf24483942cd9abf8e0b3cedac2d792fe83f7a7aaca7c7425c214916f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US38Y2428615.
MASHUP: XIN LỖI - ANH ƠI Ở LẠI (feat. Thanh Hà & Phạm Anh Duy)
BÀI HÁT CỦA CHÚNG TA (OUR SONG VIETNAM), TẬP 9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfe4c6172b50619d268a06ef097d165dfc2242c179293803d953f1061e9cd2f. 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/US38Y2427588.