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 0xc8a7e782f03d18647cd7a23de28ca736b53603d38ee1ec945046edf38d5b3756. 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/5a0d449b-dd99-4b4f-9b62-1c96e7cd3c09.json and https://artists.proofprofile.net/proofs/artist/5a0d449b-dd99-4b4f-9b62-1c96e7cd3c09.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 0x5ab7849748faf90b2ac71b6ca502855146b139a80b6fed7a041cb41620ac7bec. 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/QM3DF2165914.
Il Vento D'oro - Golden Wind (Lofi Remix)
Silhouette - Naruto Shippuden (Lofi Remix)
Silhouette - Naruto Shippuden - Lofi Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38497871f69803357b7482264c6f9e9de0b828144abe9fa4afdec47d47a9e929. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZGWX2245476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3088d1b65aa0ead551324e0f620d52066aad2694676833e896ec06ae0eb311a. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZGWX2245479.
Blue Bird - Naruto Shippuden (Lofi Remix)
Bunny Girl Senpai - Fukashigi no Carte (Lofi Remix)
A Cruel Angel's Thesis - Neon Genesis Evangelion (Lofi Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722cca79316d94ee1f3ac355ad27ec16211eb01069a9b3248fcbcc540d25f324. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/QZPJ32106999.
Crying for Rain - Domestic Girlfriend (Lofi Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491e221948668234bf74d540153e85db55c0f328657cf9c455196dbfb7e08aa0. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/QM3DF2170396.
Call Of Silence - Attack On Titan (Lofi Remix)
Call Of Silence - Attack On Titan - Lofi Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a8c471f84ea9210a8fd17eebe839b224ceb303bb66d4a681844e09882365da. 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/QZPJ32122831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed5f2fbf7ea251ed44e3c8e3f031a3e13c67d4a0042e05de50a5596d0e29c47. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZPJ32124791.
Kaikai Kitan - Jujutsu Kaisen (Lofi Remix)
Kaikai Kitan - Jujutsu Kaisen - Lofi Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02afb4679cecfe450f4fa2a7d911223636f3e188ccca39de60609c2c4e6cd22. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QZPJ32124788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a095ec9db5605e92cfe36bf7644bc1d671b469c4496b7a8dc5b03ed594e45a. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZPJ32122093.
Shinzo Wo Sasageyo - Attack On Titan (Lofi Remix)
The Rumbling - Attack on Titan (Lofi Remix)
The Rumbling - Attack on Titan - Lofi Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f81436bf50a2143f794075b69403d1ca4f6e9c38ca5ce850c585c60ec1c034. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZPJ32138970.
Nezuko Theme - Demon Slayer (Lofi Remix)
Nezuko Theme - Demon Slayer - Lofi Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb547eb471d02da6907ad2c22af23d5518a5f0981f79c5a759a41989ed450bab. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/QZPJ32140720.
Literature - Wandering Witch (Lofi Remix)
Literature - Wandering Witch - Lofi Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aaab5108519324d938aae9f890524012b66327a72ddd16003a9194e821b4d74. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZPJ32141947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f205d18696fed7e7bd02000d0feca50075feb57fb048dc73cc7f1f64529860. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/QZPJ32146240.
Akuma no ko - Attack on Titan (Lofi Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cf9830324057974fb94d48b773a12fea0f5e8dadeedc69b979075c4b094422. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/US3DF2226080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db0d8cc2483a214d5f5de67409738bd517947b92c6f8a69871ff81dd56fba1d. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/QM4TW2250961.
Paint it Black - Black Clover (Lofi Remix)
Sadness and Sorrow - Naruto (Lofi Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7461a854a647b8fa471bd31b03f0b8789ed099653b58a3fa0e2db268f4f0778. 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/USANG2202473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c92bf5213cba71c2b81a4fb7a07d08c6c2bd3426622135557d25c2222cb3de. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USANG2268231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1151f61384c3fe9529b21add2cc683a21ce2c9cfa5bdcb7764de0153b936775. 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/USANG2289655.
Suzume - Suzume no Tojimari (Lofi Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebddc910369e9e704b7e78f18114ee5c6d87357d70808a52aaae50bf7abe7ca2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM3DF2272825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39baef67c3336585abea8353e7b000f0dd892c35271bf410c38f9667db0c31ce. 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/QZX8H2388035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd367af763ed00bdb478fa70cd0e54e9978b147fcd4471fca758631b802030f0a. 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/BCD4N2100074.