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 0x0e0a1a656e0bfba68386bb4887e3cd3dcf6ea73418cae7d57662a36a44c04f02. 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/e2df813f-d025-4d80-98d8-c237db6ce84b.json and https://artists.proofprofile.net/proofs/artist/e2df813f-d025-4d80-98d8-c237db6ce84b.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 0x736c3af5b24351a4f9e785053f3c6da0bc1ff730d9b56a50e5741d5ab9cd4a96. 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/JPPC02412077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8185530f8ba9add86c942a174f3e4cf6f3928603a3e68c6aa0f43d44bd53c897. 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/JPPC02410088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8edece9aa3ee1e007728a1b11033e85ba336120b82abd8009f58adffd2fa9b. 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/JPPC02410085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8598254f52024325ca3840bef291bbc2c90efd10643a08ff5a89e8fa446197. 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/JPPC02310128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a6654f4e033b6e555dcb53037f928663990080415ac470bf95605cff17b152. 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/JPPC02210391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d15cc8adac4b971f44f5ae747e35c8daefa2ca4f1fd10a43066cc69f4de5e1. 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/JPPC02211354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4cb6c7cfa1aa40e1c089435c99cb88e9a80ec620b762566fdcd42dc7bbfa6c. 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/JPPC02110608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8701ce75e38ed7858140d251847a8477a3d6862d350b89f7b66be65a8ff8fb. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPPC02110626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8edece9aa3ee1e007728a1b11033e85ba336120b82abd8009f58adffd2fa9b. 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/JPPC02410085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6383d9c9ce7120a0db2788bf05dbe0a33f7c352837b9c5e07270a5bafaa92464. 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/JPPC02312071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d15cc8adac4b971f44f5ae747e35c8daefa2ca4f1fd10a43066cc69f4de5e1. 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/JPPC02211354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a6654f4e033b6e555dcb53037f928663990080415ac470bf95605cff17b152. 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/JPPC02210391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe690f9f2641be02d4870637fbe6585512b0ab16686f364e0ff95564e9265ee25. 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/JPPC02000840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9c8af62488c1bd2ec5a2568a10be506d09ec89834d126c05b982b1fffdcf83. 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/JPPC02000498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2303d16d346096f2415e0a8f30b8f49975eda496ecea233179af6bde0f38fb2. 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/JPPC01901633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9821b92430396a7a77a822d0cfdd013ff6a475208416829ce1db0c5a0936a8f. 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/JPPC02211405.
Splinter Wolf - KOHTA YAMAMOTO Self-Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa6ecfab2477b725d94ad5a62fef25a00ec82cd692e104283ffc08d2cf35c2a. 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/JPPC02211407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9674d4ae82cdea920016f5aea555af7e55222a887223289ede86b96b707615d5. 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/JPPC02211408.
My War 'Boku no Sensou' - KOHTA YAMAMOTO Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978dce55dcfc69d723c36b3c8bd0a6c871c8bf82deedc4ba313338220d3815b2. 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/JPPC02211412.