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 0x605c47b629eadc944b366f951244d0d1113afcff56288f5768ae2ccdf084453d. 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/a6fb26bf-b380-40ba-9a02-667ae64362d0.json and https://artists.proofprofile.net/proofs/artist/a6fb26bf-b380-40ba-9a02-667ae64362d0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
「会長はメイド様！」オリジナル・サウンドトラック
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 0xa9620f2723c287d74ee618fe05858c646d3072c67f7fe38e086cfab931d9ec69. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPPI01051810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ec0b7a3679e0f069bb91f36f00dd9d08ffc22dc7280b79a2738585c9add404. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPPI01051840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca196c3410f2d59d26ac138801abd08a81e0bd060fe63f1316c139f1f636cee. Chain 2 (Bitcoin): anchored in block 957711 (2026-07-12T13:56:57Z), 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/JPPI01051850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9ea931dc7559ca7fbb19baef88d6b6741fa28242db0829fdd8468dae11c275. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/JPPI01051870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ad3cf7cb9ba68ecf5da834f6923797f6b252bf83d8e5b863cbb30ad81ca6ba. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/JPPI01051960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e7b58887dfe9707bd16897b303905502cac892709665075eb88a120257b32f. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/JPPI01051970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08610543dabb18b03b102dde4f0e4b1e880b193b86613aecd5166cdc62b58cf5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPPI01052070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ad361422bcdd6d38ce1f01fb6dee8907afa349fb0e67afeb66526e9c9bec86. Chain 2 (Bitcoin): anchored in block 957711 (2026-07-12T13:56:57Z), 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/JPPI01052140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc40bd0fb684b2aa748b3f193d789266d28d27e0cb45b519f679f826566f943. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/JPPI01052160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ec0b7a3679e0f069bb91f36f00dd9d08ffc22dc7280b79a2738585c9add404. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/JPPI01051840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c6eab0efeb0a287542eef4fd782966b79a3d4657d7ff90ee9c0b97f3824af2. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/JPPI01051920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e7b58887dfe9707bd16897b303905502cac892709665075eb88a120257b32f. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/JPPI01051970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08610543dabb18b03b102dde4f0e4b1e880b193b86613aecd5166cdc62b58cf5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPPI01052070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641f802a8d69ba5dbac79657a50979f8c1f8ebfd9825757bf894627cdf803c67. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/JPPI01052100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ad361422bcdd6d38ce1f01fb6dee8907afa349fb0e67afeb66526e9c9bec86. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/JPPI01052140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ebb70a84132304e4e98bb9773f6c97d8c050423e17878da07c7f7fbb14d8ba. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPPI01052150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc40bd0fb684b2aa748b3f193d789266d28d27e0cb45b519f679f826566f943. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/JPPI01052160.
｢劇場版ハヤテのごとく!HEAVEN IS A PLACE ON EARTH｣ Original Soundtrack
ハヤテのごとく! CAN'T TAKE MY EYES OFF YOU Original Soundtrack