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 0xff47335725e711ce8398add2bd524266f098a1bd0a520571bb685f0fa92733f5. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ae385ad-9683-44de-a4b4-2f68492bef84.json and https://artists.proofprofile.net/proofs/artist/5ae385ad-9683-44de-a4b4-2f68492bef84.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 0x62076033f1eabc994df9b98ba5976dcd52b367812aa55f0bc6ac8024fa02daf5. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QM42K2394416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2164840d2899015a8f5a7b5ff6310114f8e9be2df90dada9fe5e5b08502777. 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/QZMHP2325031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452d5dd2359f92bd3374ab113857863db35c83871c8da20709079edcf8cfc478. 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/QZMHL2306932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a560794138d396d85516ecb9d79858f2b5625034142fc29539859fa009d0949. 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/JP92Q2401477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa56f5a822e4ff196417128a6815998c99af2c7faa2a4b981746e150260f1b00. 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/JP92U2451004.
鏡音レンくんがごはんを作ってくれたよ「あさたまごべえこん」
人生 ver.魂 (feat. 初音ミク&鏡音リン&鏡音レン&巡音ルカ&MEIKO&KAITO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda87ea87decf41e8ff8d10ff5af60c0907ad35891fd62ae5e75115789035f875. 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/JP92Q2401205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1bdafc294a1f5693a6706aff00ed1fd1346aad63b7301e8e0a5d8d3d24914b. 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/JP92Q2401206.
人生（emonRemix） (feat. 初音ミク&鏡音リン&鏡音レン&巡音ルカ&MEIKO&KAITO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387c836b7b9d88899531173eb693a5a8432f17e08e52abc3e971dbba677e9622. 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/JP92Q2401209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5ba1712536bf9957cf3a0ac8a97fef23e112a32c157ee09804ab12585597cc. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/JP92Q2401210.
人生 (Capchii Remix) (feat. 重音テト&夏色花梨&小春六花&メグッポイド&Yuma&Mai)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d3c6554541400053a984d49f47b140d5a5aab5c3c83a87fc3c997ddf78c693. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/JP92Q2401211.
人生(CosMo.B.S.P.-185 "Inverted" Remix) (feat. 初音ミク&鏡音リン&鏡音レン&巡音ルカ&MEIKO&KAITO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f99ed5819ca98f3aa66d4051183144ec723e62358ebd3f51b3503e75fa6613f. 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/JP92Q2401212.
これがオレの人生 -人生 TAG Remix- (feat. 初音ミク&鏡音リン&鏡音レン&巡音ルカ&MEIKO&KAITO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196244164455d6657eef6f0316e48d6d4c6b1782c487e71514363f09fbbfb336. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JP92Q2401213.