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 0x99c8ad343a677e3cb506a7d89f6a374d249794767a1af9b5ae83aeef4c6c4117. 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/59ad6501-7d54-4a08-91a6-87615557f9a4.json and https://artists.proofprofile.net/proofs/artist/59ad6501-7d54-4a08-91a6-87615557f9a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
初夏、殺意は街を浸す病のように (feat. 鏡音リン)
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 0x3bbc3fe1bc82eb0cc29683643531c6b53fade57b2e323efaebd467467b892aaf. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/TCJPO2189016.
どこにもいけないままで (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9d173aa1dc1e7765e0e6d9751725e25a863cde92584f7f9271f3f2e66e3872. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:09:21Z), 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/TCJPO2189022.
いのちは彼の食卓の上で (feat. 鏡音リン)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b5495b8284bdfbffae740032c8e885d60b04385df3267a2f5fb154a94e90f2. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/TCJPO2189023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb5f761880b7a36606f4588c37aef4caf8821e1883301765f83a5b043b40da7. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCJPO2189025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f45a5f7b1ba75dd17314102f741451989d42d3c3425c03741df54f67351214. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCJPO2189026.
散るカラスと静謐な白巨塔の崩落 (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca20fe612e3fe6ee94d171c7ac52fa8e520806c0bc47dc3dce4d302651c2b4f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:05:32Z), 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/TCJPO2189027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f7bedc9ce90a3a08ddbb871662a563ae7f42f67301c787a25b5e1fff5477fa. 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/TCJPO2189029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7237775633d1fc38ef7e5d8ef970120d0bf967c6c51095616e53c394add2376c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCJPO2189032.
フリードリヒと初夏の平衡 (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb15c3fd2a264b4de85533d3753f76c97e4f85e6225d9cc36f74c20df8a9290. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:31:55Z), 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/TCJPO2189033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68cd468380e6bb081f9d9ac589a8d04cdbdcd460e34ae5384afc58f86056ee76. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TCJPO2190849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9755825bb60ef0e6928ba7583b88343cd5679ff6fb4501d76f9941476b323f. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCJPO2190853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60aa955efcca045252045b6ecd31153c73c23429115a3e94ddd62b839488aab. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/TCJPO2190854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508412111aa0c869a20c117f98d27d94d32dc96fbda8f751720420625dcef67c. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/TCJPO2190856.
優しいてのひらで心臓を包むように
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f0cb9659e788a2903403d082b606c1807fdd1ec5dba8f67074b538dd890829. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:48:34Z), 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/TCJPO2190857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e7049d729d480652da686b7e3aa84c6f854fa541f26dcfb870f77993d04efb. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/TCJPO2190859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a337037e2f5f7674087b30def726f4540b3cf3cef2d2530f9f038c6cdf2ae2. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:04:26Z), 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/TCJPO2190860.