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 0x6c51ab4fee9e3b1364c559a158309ac24009469329c09ff1271dfb8606af6bd4. 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/879cb703-8dec-4b35-975c-9aabd56ece6d.json and https://artists.proofprofile.net/proofs/artist/879cb703-8dec-4b35-975c-9aabd56ece6d.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 0xbd967eaf4d03bdc8ecd59e59d8e3f0ffa476e90b245d80db58bfbc8bd225016e. 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/JPT551600954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c891a0fd4ca70a1f46975d550f77bfc5b2c70c93d781700eee7f0fe91384b6. 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/JPT551600932.
Oh! スケトラ!!! ユーリ!!! on ICE/オリジナル・スケートソングCOLLECTION
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd967eaf4d03bdc8ecd59e59d8e3f0ffa476e90b245d80db58bfbc8bd225016e. 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/JPT551600954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0a61abc9b8229bdb383b20b94e847a71edaf2302f0554efafe509c7fee1019. 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/JPVI01426730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011541f86fa6bbe190f99f815ef98c2efaed4affba8ecd03b9f39f002141a55f. 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/JPVI01426900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a588c54948b64d259f652e70a1f7120879c6ef2a1adf2fe773e4ae0b6de827. 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/JPT561900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383cd406f6032317f5eaab50f8daf0996695921c17b63e40c4adf78a3ab1430f. 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/JPT551900153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996a8c5e32415c4fe9be3d80e54f04c42b99e9f7a7d50b03268c288d09d6f758. 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/JPT551900156.
You Only Live Once - ユーリ!!! on CONCERT CD
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc57aa563e2256498ac88cb49b7446ce3caaf026a56e9fa107ebe42547582a3b. 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/JPT551900164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a31f525b0cd8facb2856ce7f620b398a0607db999408df5df4b70ba287251c9. 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/JPT551900165.
Original Soundtrack from "Dead Dead Demon's DeDeDeDe Destruction"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc370db1907a4dc75920f41f276fb1b62ed775f90f5c69c70f843878b6ec9e189. 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/JPCO02437690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9bb5d0ec9e42eecb04485cda3c19945131f8e182b1bb59d843212168c64456a. 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/JPCO02437700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3127e05664bf11670e1e7a61d13d26a92144db6fd1f47fc9c57c1a3a548e79dc. 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/JPCO02437710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2096f9d3c4270a74e830a74c5e2cb2e58643799cf72c9bb3a68c83e181005cdd. 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/JPCO02437720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43aa1e7a63519418adf989a6787528c27ecc6e0f7f35e3237105d5a5d526e9a. 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/JPCO02437730.