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 0x9683cf495ad3bdff29d25308845a9c074b8747acc54ea712ceb2c0b5f3e9f6bf. 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/55d12ec9-4fa6-4b13-bfab-2c41bad7d50a.json and https://artists.proofprofile.net/proofs/artist/55d12ec9-4fa6-4b13-bfab-2c41bad7d50a.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 0xdb62580b7b4a4d392ca451e58b988eff658ad7ab22f17af23c4c1b64f19f9fea. 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/TCJPG1740728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2d823346e877b66be31d3efde4d168725c0b96b9f441c58be7b0a512853fcd. 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/QM42K2037322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b27f81b58a40c5a1d93669c59cb9dc49a3b5854aab7351c1c6ecaf56c8acd0c. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QM42K2040410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82845e95a0bc9cd35f0a6d89be489b3d13c47a59cda6bdb85cf98ef5e38ac418. 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/QZS662143595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073f9a705b9fbaf488261fa5c0d171cd5821646c16b9113c967bb201bf4d6ee6. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:33:59Z), 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/TCJPR2286727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d4a97460fe56fc344efdc5121bb57d2aa4ed6edf5fee29657a1c0d51600a9f. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:39:51Z), 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/TCJPA2405774.
B.B.K.K.B.K.K. - Kagetora & siqlo PsyReMix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3fa7cf9360886752c20be7c0ea4b364d59fe23bfac2e82926b15b616c944a9. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/TCJPX2387512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d5dc0c09bb1013a993d28f29fc95cc2793e841f3530562f8990a51b8167094. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCJPA2454630.
Arcaea Sound Collection (Memories of Realms)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b23fae02348aa955dd55128cc4002d1a78e9529638ecef693eb83d493b1e2a3. 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/TCAFM2172871.
Make Up Your World - siqlo's "HiTECH Veats" Remix
Make Up Your World (siqlo's "HiTECH Veats" Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b034723caf5a3ef46210a6e53e627d6df38b8ce7820d9dc852f049dac90242f. 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/TCJPB2416388.
GLORY:ROAD (Aoi vs. siqlo's ''Overload'' RMX) [feat. Aoi & siqlo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb3f28c07ea3d97a32e45361ebf9a590637936ce4b31ee434a5f23311838b13. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/TCJPM2020258.
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 0x320d84c8804fda912701ac7586d63bf607d14b4f2f1c8e78a233c85518c62bdb. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/TCJPK2026414.
clairvoyance - siqlo vs. Aoi's "liarvoyants" RMX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc54eeecccd4124a98d52def68def7f26de94559488efc84de5b36421c2bfdfa. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/TCJPP2193484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6eacbc547101a4f95ae4377050ea275ec3facbb67a7eb6028d4447e12bc2267. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/TCJPJ1930088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b9efd229949337d2cd35d763c6030a9e5355b24395599c2af41b9088bc7cf5. 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/TCJPL2018632.