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 0xd5a003b0a1db23e9ed3dcdd0939285f67f5edc320d6c91f5aaa73c0e028b7b4e. 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/ea6e74e0-5bc4-4fc0-a169-9ac040e2aac7.json and https://artists.proofprofile.net/proofs/artist/ea6e74e0-5bc4-4fc0-a169-9ac040e2aac7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
You are the HERO（「鎧武外伝 仮面ライダーグリドンVSブラーボ」主題歌）
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 0x878c5efbf83539175692aa9d8a24cb1bc2e476963702946499c653a66f1d24dd. 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/JPPO01217478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878c5efbf83539175692aa9d8a24cb1bc2e476963702946499c653a66f1d24dd. 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/JPPO01217478.
ずっとスパイシーチョコレート！～BEST OF 渋谷 RAGGA SWEET COLLECTION
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878c5efbf83539175692aa9d8a24cb1bc2e476963702946499c653a66f1d24dd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPPO01217478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3e209a2f9080a7011695ccd319492acfe38d1184f33025941a99a50486b75d. 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/JPPO01620942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586b8b33ff86ef8c9420f55eb33f33bcb6063c396923a6f89cbf8dd0858d0b63. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPFL01101210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d13d1eec0513f7b963ded8faf0cc36365bbbb350cf05553346859daf187d18. 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/JPFL01000690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7765e54e723d2cad5305f8421101f9eccc2a3713063498dc4f606420bf22dfc. 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/JPPO01905090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7765e54e723d2cad5305f8421101f9eccc2a3713063498dc4f606420bf22dfc. 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/JPPO01905090.