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 0x173ed07f06daae8e239a2bd5a03833b648b007a4af677af422903fa54f49f4a5. 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/67867220-f543-4c8a-b6d2-465efa66848b.json and https://artists.proofprofile.net/proofs/artist/67867220-f543-4c8a-b6d2-465efa66848b.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 0xd13b5b2c7176a6cb9cb3a3795cd9c046b066010ddc776bbbba7379f8d626a5af. 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/FR10S2018890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a162cb003cfd710446cc41529bdc0ba21c692f414c46befc34a8dd38d028291. 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/VNA092107862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ddaa3c7aace02bdf0207140859dccc9a4f1a3bd78ccbe7fc1a73f855978668. 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/FR10S2210618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c24a663deb9bfcaff93b76a43ba0f62af9590ba062a1a4c6b6412c11641392. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:58:22Z), 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/FR96X2242767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ea3f314dc872961058249acabb75447d02f92891cf90e4723c040c722adb05. 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/FR96X2249101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8c72549bd49488901b5182dc7806580f259f9effa22457e70726cf066fb6a9. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:19:03Z), 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/FRX202204797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535ea6184e41ac468ddc2d6f4478a3f313d864db92c8713ea90c5d0bb4b068d8. 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/FRX202204796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc547b6cb2874be5e0eef07c22cd74038beb328bddac61266a095e052f2b8ba. 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/FRX202204782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83dc5f6c05ae910cec03abb1fa826e73dd1d0082c7f4f0c9e154f80af7d609de. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:54:24Z), 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/DGA062240373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc358521fa8db73e555c75be887e899f6f3d1b2b93c53f3c39300637c0888117b. 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/DGA082263153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e14555a02c122421f023f2b0f2016b06054aa1a367a169a2e4780b05a4f135b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR10S2392560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fc918a4af8c7ca5b2d50866e8ac813a99706ece03819f24a6d9c2328f4c53f. 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/DGA092357452.
Thà Bỏ Lỡ, Niềm Tin Nhầm Chỗ (Live at ZLAB)
Đi Giữa Trời Rực Rỡ (From "Đi Giữa Trời Rực Rỡ")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9681616a42acb925ec08689b980774c1c789e3dc6113d8e21345757a69062dd6. 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/DGA082494784.
Đi Giữa Trời Rực Rỡ (Original Soundtrack from “Đi Giữa Trời Rực Rỡ”)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36713b1c5ee1f68e33c8081010b7ab6f8c9fdf4c6c137c1613f52173b780895. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCAIO2470591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3696ce3488189c36c08e7362b4f67029201434a6264b58e6e217a9c298010366. 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/DGA092470301.
Yêu Nhau Lắm Cắn Nhau Đau (From "#Trầm3")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbef90cfff1a2a637c7117742f5aadba5fdb94e88bd165f7ca6a628280c956a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/DGA092446066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3696ce3488189c36c08e7362b4f67029201434a6264b58e6e217a9c298010366. 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/DGA092470301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c5edf5bf3a875470c0bf3c06d31e8c826f5cedef816dd6db0bd25c4ba1784e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DGA0M2401398.
Yêu Nhau Lắm Cắn Nhau Đau - From "#Trầm3"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96dc7f8af557afd3e85f15af4bc28b71c36613a0b5d296bc738f5d9f6c72a19b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:16:07Z), 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/DGA092497942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55716ae1513d5ffe88c0729bb46c551c0d4ef5503e1669a48e7c56657447a63b. 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/FRX202536291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f835a5601ba00ef700dba191c57b3552baa727f7f51412aa96b029dc92eb69. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/VNA1M2406672.
Mashup Anh Muốn Đưa Em Về Không - Đêm Trăng Tình Yêu - Live
Không Gian Cảm Xúc (Mùa 2) - Tập 5: Vòng Tuần Hoàn Của Tình Yêu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17352291ecf8f22dd77da717159776891739120764bd13bc83431bf80a09e00e. 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/VNA2E2311190.
Cơm, Áo, Gạo, Tiền (feat. Tez & Ngô Lan Hương)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d391337ef500ddcb4a2b68fe11a1744a62cd76a4565aeec1870b5a0c6c6bd27. 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/US39N2307750.
Con Gái Phải Sang (feat. UMIE & Ngô Lan Hương)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c50ea239bdd519ff74a2fecf3653b979292c376042085f3945ca467a47ed6c. 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/US39N2308509.
Ánh Sáng Chân Thành (Sinh Nhật Liên Quân 8 Tuổi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f900380b0fcfdee790fc045243e4ff17fece41cd85b97264e79d2616649d61. 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/QZW9K2403829.
Mashup Buồn Một Chút Thôi Em Ơi - Tôi Thấy Hoa Vàng Trên Cỏ Xanh - Nhắm Mắt Thấy Mùa Hè - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbc8fd72d10e75315edf0f28946e62a20f5fa5ccd9063fe4e7f28b401f84bc1. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/VNA2E2311188.
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