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 0x66029fcb7adc92ab32c20dbdb46a1703cfed68ad9052657ffdf465e5acffc5e1. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d911c82a-7e56-43ef-a7a8-df6e0e0d0d22.json and https://artists.proofprofile.net/proofs/artist/d911c82a-7e56-43ef-a7a8-df6e0e0d0d22.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f06347c13897f21ea62e9c8ea90488cd0d7f149e45b7d3d8d752ddceca39af7. 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/JPVI00841750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452e3b8e35f7b97266134dd8739077b6774cb9dbefd22cac75206c39838497ef. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPVI00841770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9619003462d6d0567c8ea911f18f3cd93dda3738ee1792df6c4abf7fe5e69565. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPVI00841800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa954621f085f9a31411432a4fed5bea1ebdca6b186112c497d6b99c9cc0132bc. 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/JPVI00841810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f1e54be48894739e47c50081e0b5756e2aff48a67f0e54b4bf6d01251a71e1. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPVI00841820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd133e7691347fa6b439cd19a0ed756b3948f34e43429579fef63b860d4b7b28. 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/JPVI00604540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419db1f913fca2fa37d80253fa7afb6ba4070e5b55b333485234cb827cf50cb0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPVI00604550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae53df422090bd2cedb48b13b430b04c84e581adeb02689d2f4eb33501c20093. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPVI00604560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2f715977179db25c5ae8cdc22033452767788f98552d7ad8ef7acfc24b9673. 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/JPVI00604580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9ae8706c07a6a1aaafbb542007e1338ae96a5640393e54f8b2ba0baeecb035. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPVI00604520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47466739bdf194763421b1d2244eedb73e67cb6c817d633390b18021bfc7c69e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPVI00604600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4710b3feaf97adcc4c426ad82c34ebac1a30661026039a20a855b2efc5f1f7c4. 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/JPVI00604630.
ジオデジオ ～ユー・スピン・ミー・ラウンド
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f112ff81b43c52384adef275a0bc28d64eaa7938d1d17cd9ea6bea05005955. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPVI00604680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b1f09254708a4978bccbbfde3bcfdf70937eb8c7505df3720a19dde9eab38b. 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/JPVI00604690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a0e85722d458675821629023a9a643deae77a7ef57ab9c802fa3df5d9e1d9d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPVI00506390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe270b6e22c5f2056e0dc493aff736e8ff50880da2d9c2897c532528e1b8b4b3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPVI00506420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a09ed774f6a16451315ac4d565f40ec6677930313eaffb55d9f30996c8fef6. 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/JPVI00506440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488f4656b011901d8d5e814173ed0a89a2c52775df92672a09b0c851a9a611ea. 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/JPVI00506430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8d4d5d36be22164167df4b4df50a3a0c99733408728a1e3df4b5405e9c37ba. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPVI00506410.
ドッツダッシュ／トウキョウサテライト
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cb0e5c1b0d06ffe5a75a57e6b55e059c1d3385d1c86399db2a2e2c8d37cd1d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPVI00614940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a73740a694559aa9ab7e6821b1a5c6ef6762d27be1c3bfd9180562035a2b59. 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/JPVI00614950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34573d9595f93f94f2330fafd39bbfd8e19b454ccfeae78ba4fb94efcfb135b. 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/JPVI00501330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40995a06640fe3b04bfc314ffca5ef4a91241c6474b920c8d18a4ed569fca57. 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/JPVI00604170.