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 0x7c27e5fbaa9148730b19a5b003625ed14c5420a5f753a3ae1ee7a9aad182b2c7. 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/b68f9499-a391-4c39-a6cd-888a184214fe.json and https://artists.proofprofile.net/proofs/artist/b68f9499-a391-4c39-a6cd-888a184214fe.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 0xbf8db9e078dc30cc783c47b124b0331a52ca3073fdf6e3fb2e5e23ff3e9fca9b. 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/DGA092373640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491655e4414f2f34307d722d82e492078a16652aff403521af3534d1aef7a41f. 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/DGA0M2367056.
Nếu Mà 0 Phải Anh (Teddy Doox & VoVanDuc Remix)
Nếu Mà 0 Phải Anh - Teddy Doox & VoVanDuc Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a149a47f6a094cd118a638473e22ffed137ba0f959ea78894826e5cd0aa938. 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/QZDA82302264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd5ef051e39aed3e4c2d93f99cd2fb54484690ed7cfc469dfa6a9703a59d0fc. 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/QZK6J2231461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12843566d41d89264161750cd161dea1d278cbe673690472db3d397d59d2e266. 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/QZES62270205.
Nhạc Anh - Andree Right Hand, Wxrdie (Teddy Doox Remix)
Nhạc Anh - Andree Right Hand, Wxrdie - Teddy Doox Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c40013a5b80aa230190268dde509c56dd8498eaf5227c28b243ed8f1c9620a. 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/QZPLS2155057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd32a69c2785809e91cedd3c21ea128cecdf34fef6161dca96c32494091e5b1. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/FRX452013865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d87575b37e5d512e4c3cace6b34057aa01c37e90f683db7a8236e013432414. 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/QZHNA2118556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b60d6f80b98525c90ad95cac7dbb10cf22f4139818ae6cf1a0a0d6b72f0d31c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/VNA0M1907807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa27aec7850ed064c1de6a26b1204919f7e922ba1e6ec9c097a1d804a398a4b4. 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/QZFYZ2015525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27e9194544b1f28b9dfe0284eda28285404143db5443b35bb914979288c04bd. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QZK6Q1949530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfffc2ff687663fa2a7d9dbd75fdb8d25de77a1dedd7d3f5882830db20f53bdf6. 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/QZFYZ1962480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23df5842cca8aa3a9c1e822d8c28bacc95b4b89d68d30f2caa96f7d895308c49. 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/FRX452277387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6ee9c1e5195bf89ae4302e2e89bb945c3b949e272caf8fd0be8bbf4fe62ff2. 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/FRX452277388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67cf3a3130e306f64e25f817ffa5434852274c911bedf90cd660c3e64eb64d0. 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/FRX452277389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fc084f08652e4b75bc8ef9000ce0a8945bf6ccd926d661c3dd2f72d3e6252d. 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/VNA092109787.
Em Iu - Dustee, Monotape & Teddy Doox Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d59cd3504233ec1f2a4ac30ca3a1d4f0c847c7ad1e6ff8484dc767d29076f39. 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/QM4TX2480737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882137410072fc695b57ced44d1b143566e44abbdec9f017c09ad0a6b3c7c11c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QM6N22475146.
How To Love You - Teddy Doox & Tirdy Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391048c736a7075ac3c1ad2ccb3b05f6d83100540123e17813a380ee258d05cd. 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/QM6N22475151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d7da45d6d0050c68cd1bd92cab18c6d20f4a08cbe9eca6531ab962a981b8d9. 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/VNA2F2500017.