, also known mononymously as Utada, is a Japanese and American singer, songwriter, and record producer. They are considered to be one of the most influential and best-selling musical artists in Japa
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 0x8277a84612f0c1bc8403791916828a4f7fb0e82b0859437c3f15d1a8b5cbf599. 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/3ac39aa8-65fd-4833-9273-5e575ff1fab4.json and https://artists.proofprofile.net/proofs/artist/3ac39aa8-65fd-4833-9273-5e575ff1fab4.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 0x43d411df8d36865acc31e5d72c4c2b44fcf59a1725f16efd47b2ed56092eb981. 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/JPPO01806054.
CHIKAI - KINGDOM Orchestra Instrumental Version-
KINGDOM HEARTS - III, II.8, Unchained χ & Union χ [Cross] – (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c561d4f12133880baab06705152d6ac4a0a76390a80d63d8864557f04f2caa. 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/USWD12097408.
Face My Fears - KINGDOM Orchestra Instrumental Version-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904aa8a7c8c6966d6ec0ca4efbc870bfff3fa75fc84766ba758c239f456ca262. 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/USWD12097409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5add0592752704d81231576064b22156bcde054be6cd3699bdac12cfd0a9d7d9. 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/JPU901704047.
出会いと別れの季節に ～明るい未来を送るあなたに～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80733870b1788c5b98f562650620cc86af80e7ce74909e4ae39bccf3595805f1. 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/JPPO01615591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2663c14268ad780d2806dc189e68d6953a22dfbff78d4452209dfd588aeefb6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPU901801089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea7d4c81f321b981d9e1bf42398a4d966b3b4331b9190a475ee8e2e11afcd04. 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/JPU901702783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4bb4177a9ea5a86b9a12a440ee1493fbe8ee7aa9e8c7c26edcb0406f7abd667. 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/JPU901801090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cf6dd3aab462c696c27ee459a5b2b083c809f8679de83bc982ea060ae8af74. 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/JPU901801545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88b4102e214b228a222505140c0ef1639190a64f77ea52cb0b73867499a35d1. 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/JPU901701917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1d32bbec3c78e4d653ae2df18c64b00feb24945b626927e4f483288e9ee061. 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/JPU901801546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab27e9c8f09723c25ea270199fc5480797710f569c32e46e2dd3074e09f28f5. 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/JPU901801547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c8d87eab0ce87d9dab162a368ff6589f390db047d40aefedfa31e62a93c38b. 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/JPU901801548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d14ff04e845d5a6be90f7ffb3446360f074b808fdc225c5647241010ff4723e. 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/JPU901801549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af6f6916490452df4825731ded6682ff9542ab5d1fe4a5bbdbd713c718fa1dc. 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/JPU901701817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018cdbdcc135eac9b49a75076c7413392f8f9f6e84af96b6d643f8ba6e1387c5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPU901801550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c05b914fd6fe64f1ca7c242bfcadbd77dc247db032108e4e2f0db3003c3cc9. 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/JPU901801551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8123e6e92924de2a742c0b8b24db2f887aacbaec61eb43b0cbf047f505173632. 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/JPU901803446.