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 0x4dea2ec1d107422903e8dd3bfb766c48fc70011bae7d1307752ec1643c0af2be. 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/84939e41-1c37-45a1-88d6-defcd7e8252e.json and https://artists.proofprofile.net/proofs/artist/84939e41-1c37-45a1-88d6-defcd7e8252e.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 0xa6afbea5aee96f58c7bae6de7c56f45010bdc03f1d7c1d9fe77975c1eb1b9968. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T01:00:34Z), 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/JPV501600333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f35dedf23540c671af468a5fb863b67fcf25bcc5e5d1659eed67d0cf993a8d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPV501600334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed39594c520a6c174a4545e2d2831b36ab1ea2a8f53a0b129c71dad2b44adf8. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:38:18Z), 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/JPV501600336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f360a24c34217b843e5403d2fc2cd1839105161b96f21753a2f41392be94794. 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/JPV501700122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a506923b52f782dc3e4d667ee6760044df56079f5ddf06e26a8cdadb7a9332. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/JPPO01801628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5377c439f761e5d7ede7d39058761413f6aca7c6af43f93adb36409c8196c7b8. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/JPG102402421.
トーキョー・シュガー・ウィークエンド
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3567d5d65dd4497d41dbb82a05fa769aae43e457c0dcf6a96bf077ae00ef8c56. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/JPG102500019.