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 0x1855ca915c6efede42ab29a080dd62d0bc6ef882fea2f790b9773d078ef15579. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a3f4d86e-c1c9-4be8-9d5d-b7898090edf8.json and https://artists.proofprofile.net/proofs/artist/a3f4d86e-c1c9-4be8-9d5d-b7898090edf8.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 0xef700886e6c5ec7878523623b31a9317b01e52fddddde314a78d948636ef7105. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPB600701409.
My Philosophy (Takkyu Ishino’s Techno Is My Philosophy Call Me Acid House Mix)
My Philosophy (Takkyu Ishino's Techno Is My Philosophy Call Me Acid House Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e65f791b4ed01a5ab5204aaf8a6ad3e610e282571912c07a90f384d26dfaa0. 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/JP92N2432820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048d5b6bd66bedbd1fa65c9b00fc69b2cf05e3dc4a065c2446c0f93d4b5af9f4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JP92N2432868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21269dc024c5a364b89801bbbc663fc7a8625e9ed2d37b7b98efaef0dff46d1d. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/JP92N2415883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe5a6fbb7233fde1a314b57d49fb9d1634fbecfe45721eff9e9d719dbc0b58f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JP92N2357466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff8c563e62795a6da7d3a2a28aee1feaf53a3c9f965888d9bb958659308b92c. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/JP92N2432821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffd1b8dc89e71b9b89d90f9a95a4335d6c0e579af0119c42a5890b55128d18c. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/JP92N2428547.
MUSIC FUNCTION (DJ Nakahara & Tanta Waka & Haruka Ikegaya Rock Da House Remix)
Eiji Sugiura Selected Works for TAKAHIROMIYASHITA The Soloist.1
Eiji Sugiura Selected Works for TAKAHIROMIYASHITA The Soloist.2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635c4fea5abc6d70dc1e388946b553ceed7d22e574c1d905343549e6ca43da4f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TCJPF1771352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910cdb8b88362e8fd32e5233af711ee95a755a745d0394052384ba4ac1bb783a. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/JPWP00002901.