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 0x5edb89bdfa5c652b249b38a96c17b935aadcb6c5ec179174e9e9e70a54a8a002. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c941b17-628e-467a-9e89-0e32a770002b.json and https://artists.proofprofile.net/proofs/artist/9c941b17-628e-467a-9e89-0e32a770002b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
かせきさいだぁのアニソング!! バケイション!
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 0xb235e89583b9a8b1f1014dab442616e0c3ee6f2a4b21e00c013dd3ba9e464936. 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/JPTF09605401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb35d80c474ded2c9a6e0a674eda4e8970e0e53efe5a17c3b068badfc182758. 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/JPTF09608401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0075f35fdf82ce9d97ba6350a9f8667c699c9a87859140f2790bf8f1e7db02f6. 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/JPTF09608402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c11150a4a435c376995bb71b808187f6f1194e284e839066419d7069e23d788. 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/JPTF09608403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47237b6de24be8a42a25809b9d0d6c3562dca9cb1e3d52adee0c965a6ea94893. 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/JPTF09608407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6977c2586bf7e88bf961b67898e2048c2b5e54a1bda14f2d579281506c11b5e. 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/JPTF09605402.
CIDERが止まらない/明日ライドオンタイム
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304dc009fbf85d1717f622e5c2fa77febac5a1bf2ac342e19a57dd0c1f9cdd1d. 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/JPZ921600727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044e06985fdb0a97bbaac124d5ebbea3d38f4579f631d13b5732690c78385ac7. 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/JPZ921600730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01415a7074e0cd7dd43cd67a8aa0e3d95a9189d0d4f2e0e85c5347a17ca85b03. 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/JPZ921600733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e586495cac9c97ba8cd8a93ab6466a3562e8403c512225373b5a5adcceaa66. 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/JPZ921600737.