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 0x5fba4f5f4d5bac5114044980b216cfefa742f689afdd0906909d3ec20cfda25e. 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/7a99fb5f-65a1-4fb7-b496-8c346a8537df.json and https://artists.proofprofile.net/proofs/artist/7a99fb5f-65a1-4fb7-b496-8c346a8537df.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 0x2e8e788dcbc877fa9d164be020c9f20a9c1990adfbc7873124751ace25034d37. 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/VNA1M2400133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84c2f9fb25a2afce490a8244e7533ab3b55115f4b1222466e22f6e0656f3caf. 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/QZYHM2423453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d03858b2ed15837d93b2d949d7553c517ba7cc61495644c9061b420fccdbe7. 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/QZYHM2423419.
Ngốc Mới Khóc Một Mình - Remix Vinahouse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34511fdcac294d31caca280648f59066d3d0bf5bade921124dc7879c0e4b3218. 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/VNA2F2402167.
Khi Yêu Nào Đâu Ai Muốn - Remix Vinahouse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb0e8c1f86a7d57c57d3d2698c678e9e736d1548c19803fe0c49f34a99dafb8. 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/VNA2F2402095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7be9ec28efb21e1e96347dddee1907c68aaaab99a66d21b8d5718235a39ca0d. 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/VNA2F2402012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76e77aaf4671ce0201435c5cc613f7d5d196720d0146845b705723e3ad168d4. 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/VNA2F2401474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922adc99fa075a2e5daf0d0b2b3d206897bde95129d6b355588552296448d79a. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/VNA2F2401475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4261e64ba27a0b35846a195c5d9c9f3d822ad97a27712eeb2018daacbfc43cf. 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/VNA2F2401473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d99b25c2f4c8857a3bafdf45116d9ff7e9011d71fda31de8b3334ed9a580891. 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/QZYHM2420915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2942a57c831f2197a8127318e34f0f2e7e16ca72a49f7922b8f2a325bde43df6. 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/QZYHM2412588.
Tìm Được Nhau Đâu Dễ Dàng Remix (Vinahouse)
Nếu Em Không Hạnh Phúc Remix (Vinahouse)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ff54923712b1e89649d5e971dbf894b57376482c804028acadd94de4471740. 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/QZYHM2409947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a0435084134f299b9096d9159458875a4f6e00641b12aa8cded44ee01a7646. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZYHM2409431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b438b967aa604bb5960ba7fbbe377cb7ff9a08e1aa680970dc2f1a391bbffb. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZYHM2402744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34dda38d6ed10a3202b403113664b4c153aa0cb0f22e897b558003dad0ccd2ef. 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/QZYHM2374497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb479b52832c1b947308f4f0b4ea8b5cebecf15ff3cecfbed2edcc82aca547e56. 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/QZYHM2373419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e71d329efa50e4a912786516c29d15dbef761b6c0c37dc0c37525110b3b502. 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/QZYHM2373138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f2a2619e940f46dbdd482bfd546cccff53f3d446d80cf129203fa4a59fe915. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZYHM2372476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0496e7da5a3c4cb7748fe0a35618d705f7215e05e6b5df74527fca682e2827e. 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/QZYHM2372480.
Có Duyên Không Nợ Remix - Một Người Đứng Từ Xa Chờ Anh Về
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d3ac3d49d28e2edc33986e7643901a7c5a34af69dee343ddb7ed8d186be7a4. 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/QZYHM2368670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56ddfd21d30e3727b1ce70df883084cdd9be7d7fb5e2b33de8ede7664aadfa4. 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/VNA2F2301899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9bc1386b9a43af41671b32ba580ec1f30961c7405cb8d0741be233fcff157c2. 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/VNA2F2301900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1073fc3d1c064c5cf4fe0f9ff42d4f1604155fc15385af284fda3ba61fee72. 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/VNA2F2301895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd336428abca2eb38c8bcf4c0162c9abf04f85a0f15d5320020f36572a2f2fba. 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/VNA2F2301884.
Có Em Là Điều Tuyệt Vời Nhất - Remix Vinahouse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675e1dc17cda4328112db6901f935a3d00f0091a234c4bb001a4ef1c66182362. 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/QZYHM2366324.