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 0x59d57244610b3b3311628a20291645ec8459edf7eca8b7d65f9ade4cc7eed323. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f506ec6d-6649-4f74-903f-ca54051942f7.json and https://artists.proofprofile.net/proofs/artist/f506ec6d-6649-4f74-903f-ca54051942f7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
加藤ありさ東方ベスト 東方魔猫娘伝
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 0x81d6362e75ac6be2540bff95d6417e2dfc66daec4c4f6480e5950e85429588de. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/JPW561902000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c0a4243720b1578e2e91a97fcbf3a6ee7b2c7cdad3df520e19d083d4fe3216. 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/JPW561901919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870c76b7cb4ce2c6917029162a96e5ee8233f5c4b6de874a4f5fa9f4b3ee22c3. 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/JPW561901892.
トラベリング・デイズ(EXCITING BEST Ver.) feat. 加藤ありさ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba86cecb72c600133cec855e1357b857de09175fd3b5a73bf765a56e7ed5a95f. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/JPW562002074.
のーぷらんガール(EXCITING BEST Ver.) feat. 加藤ありさ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83b776d0e8ed653e30b7a9ed5e5323b2289e84b093affa8b6dc58f236ed122e. 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/JPW562002072.
Mermaidream(EXCITING BEST Ver.) feat. 加藤ありさ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3a8b94bb9c57dbf2e78a64e6258eea76a6edfa2859c88853727fb1c0caf604. 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/JPW562002080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a384e42c3c698de78fbb4dcc340c319ef71d7f0c7833e96effd8aa9d7ff32d. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/JPW561901960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4e71f414f3e4d7c686c4a8dc34cb474f530dab9cec2f740d6ad126a23956d5. 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/JPW561901965.
ウチュウタンサロボット feat. 加藤ありさ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e1bbc140f0bba7daa87287c180bf1fa6fddb4fa01d1994f93806160ad9426f. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/JPW561901903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ecc2a367aa747218115c24ccda6edc65480a7ecf435807d269080bf90e88ad. 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/JPW561901889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8985839aaa4b0ad1aed489ce0b8189c2f3e87b8c020e4a39005cac91ccf78989. 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/JPW561901911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee8d4df0a68aebc7b44e3598669cb7200763198ef285054e4e2d5eb84f41b6c. 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/JPW561901929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0986fb38027c23f239fb4928cabf9dd6233a5ced7b5df1336f11db16cc85f2f4. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/JPW562002060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6664dfad07a7fcd131d5ce662f6702e78f94171026d992e024b9b1b32498be49. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/JPW561909851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b65cbf849f4abaf02aaed90abae41e62f01542d4ece9b9ae57a34ac397ce92. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/JPW561902025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fef7f1693aa34756da6856318cbd7965594a5d1862d42516c31be5f59604fb. 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/JPW561902047.