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 0x2addf28a4d1fac37bd2bac171dc11faf46929625fd602875fc469bbdb2c2fa5e. 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/88e293d3-60da-47df-b7cd-6b46079c2eff.json and https://artists.proofprofile.net/proofs/artist/88e293d3-60da-47df-b7cd-6b46079c2eff.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 0xea180bae799e7d57dedeae05b9b1f150fa5393a9743ba635e8a3e27cfa33be73. 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/QZHN42298916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf297badfd669287a199c128016020fcfca5058125a4d6d1544d5dc3e555a772. 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/QZHN42298917.
Unravel (From "Tokyo Ghoul" - Acoustic Version)
Unravel (From "Tokyo Ghoul") [Acoustic Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47192e3a79ebf6dacf55987f2421117aaac815ea6a9e5c7f666ed077e1a43ecc. 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/QZK6M2248209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d34bb604955dd04b256cd398adb65bc25906c67b26f2307d6762e7bdf7fa5ec. 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/QZK6J2222620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4818c38e571db0fa01b2d9171652d5b7cf66b28dc60d3e32d95b4ec9a98c0e. 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/QZTB72326124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4140a16a5317a2dd66a20d15a6e17141f061b66110f150523f05ce726e192b7e. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:51:38Z), 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/QZWFN2394073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2695f749fe2d0636be41865f1eb606bf3a9686643a0dd420fc4719b102da138. 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/QZPLS2461957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d6d3e4f817daa2398593d3018c0f960ec0ab82a1a5f606ccb95b74ece49fb4. 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/QZFZ32473286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2f347de2618234a95403bb2d91c625b9a95b7d0ca527b5cdcfecdd312da21c. 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/QZK6Q2476265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b878e741fbf43295dfc9ba95d11ead18b94ab7a3fdbb0b249fae1f800e4e28d. 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/QZPLS2461958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d6d3e4f817daa2398593d3018c0f960ec0ab82a1a5f606ccb95b74ece49fb4. 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/QZFZ32473286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc718d981a7c2cd5fb9ee770a9b35f4b4d800efa06cd9c51a1c315358059a525. 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/QZNWX2522998.