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 0xc561510a4b2ca48ea068e27bb585e0fc28f94b042197beabaa60764586daa69c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c764746-81f0-433b-b43b-6f927093845e.json and https://artists.proofprofile.net/proofs/artist/5c764746-81f0-433b-b43b-6f927093845e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
強がりライライライ / セメテセメテ / ぱーれぇ～ / ガラスの純情
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 0x83e20ea1b4d09f68dc94b5386e46346cac59cc298244c67eea64f3544e85c00d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPE871903922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8959792bdd41d9d3a852fe3f8c20d90548e3dcd7d3c5803548fec3490299fc. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/JPE871903920.
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
どのみちハッピー！ / 雨に唄えば / 愛について考えるよ / エンドロール
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecd89a34732c86e1463e0e8f102d442ba824fb0adbd189a8c5ebb34b0397e00. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPE871903496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330569e353c2319a327589e84656de67bf80f7606298d8530e3198d734b24d6c. 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/JPE871802913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c5490a79f92e7d1026abeed8d53911db69697ff9c3954e744d8f7fab8ae1be. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPE871702585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f9ac0258ca3fe2f6bdb19e645b88311f386ca0328476def61337c9a269aa6d. 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/JPE871803128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9d0dbc4d636d416aa471fdf455bda8ca886bc31b8903a17af9499fa95b3cba. 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/JPE871903204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dac709fb06898df01678d473574c718c3e9bf701d85040ad3cae54b27bc8fe9. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/JPE871802763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7087524695072656963976cd0acfcb60b173102a4e8aae39b9b077654a706d20. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPE871903408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c65414325c41fa44ce0817e5edaeb44a7fc3d78e633234c568522733fdb17a3. 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/JPE872304959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642aee8bc415dfb8ab56b454e089367052510bb0ed6b98c7b20543b433c8f78d. 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/JPE872304774.
Life Is Beautiful／シーユーだけ。／Dong-Dong-Dong!!!!!!!!／ドレス／好きな人の好きな人
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996770bc9a7fe20527e6c50a86d2b48c3b1fe9f966ddbe75e93d5f80404bec66. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPE872204663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0dbc9e53203ca401e43d427ad9b9240fc5037825e3d6b8271397c986416b1e. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/JPE872204665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a1d30a8aa22debb751d353654bfca6e59a27f8d41fd5aeb8e06d804accd662. 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/JPE872204659.
だれだって、アイドル。/カスタムにきちゃん/Tell Me/starry wink*
リスペクトーキョー (アップアップガールズ（２）ver.)
にきちゃんわんだーおんぱれーど
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90c3267ceaa3e0725e479e34e24afe5848433627a54ddda0833fb3e7ae9123e. 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/JPE871904104.
世界で一番かわいいアイドル / し・て・る・も・ん
っていう初恋のお約束／ハッピースLOVE♡
どしゃぶりのテラス席 / フユトテトテ