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 0x0b5631792873de9b349fa68d09c37613f6912ab78aaa5ab2ebdc2382c0c1a37e. 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/3abcf033-fc7d-47c2-bd7c-03ca3a9801d9.json and https://artists.proofprofile.net/proofs/artist/3abcf033-fc7d-47c2-bd7c-03ca3a9801d9.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 0xdd3f6fabfe6ec0b2a15753d9fab8b64bd87ca3d4fd1b20bd0c0690f37f9bf761. 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/JPN301200761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa0888a55207549f0fb77977a77f15f4fe8bbe1dffe337830784bec16127cf9. 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/JPN301200762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1ee75329017b1c7546a9bc9478713fc383b884eeb02b810fa45b2c5bd44f59. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPN301101601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18a1ec2553f160992f80c810902fc6f76334ca6c71d729ac3aa51f79d6079d3. 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/JPN301200765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34dcb90624a40969d0b5d3d055f80063bcb1ceb7a30f23f6ee76e7ce9feaaf3. 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/JPN301200141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68111492b5b1dd2eaca4e995666644ad5cfee588969d5fae06968ff68916234e. 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/JPN301200768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4698ee97cda132754dcec3b82c39a79c0a43bafc9f19c6870ab0531bfc356f35. 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/JPN301200502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b3af9d29203b9d4f4d945d93c9cc1d687d70af6ed278a319510dcd51fe7ab6. 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/JPN301200766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf38921b83c3265d015d6ef2dab9111deb49553be92ed51846cd842a4d65d13. 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/KRA381208668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e9937c1769edb60703acee91bd95df2b7db0ccc863f4184169429353ae07e4. 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/KRA381208669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa5e45240e06c83a56c851aee59ae0d00d13cf703213ae79fa15ff70c5afda3. 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/KRA381205775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49d6fa6f35316145ff8aef828426e9052115fffc53d0476301540acbf4c2674. 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/KRA381203134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfffca28f8ba363b6e4487bf18cf2175e42f56ad2ced9911156ac2524483807e. 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/KRA381202374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1ee75329017b1c7546a9bc9478713fc383b884eeb02b810fa45b2c5bd44f59. 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/JPN301101601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e785749c9cdd87ce74a308b870c97399d7c5b301a430fd31cf0f2cd728c784. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/KRA381000905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad6d8843a4129c56aedb0389e338ccbb64a87664af816c8b73907eded1648b5. 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/KRA381201934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4698ee97cda132754dcec3b82c39a79c0a43bafc9f19c6870ab0531bfc356f35. 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/JPN301200502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d5a0262808b38ff6ae5e609cb544f1fd2e68474adb4ba778f57c34fbce9f2a. 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/JPN301200503.
TWINKLE TWINKLE (ロック・リーver.)(アニメサイズver.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22acb02c158b943073c796638e8a0b7939ae938af0d35951288e89153d837542. 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/JPN301200361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34dcb90624a40969d0b5d3d055f80063bcb1ceb7a30f23f6ee76e7ce9feaaf3. 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/JPN301200141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a2d41efcce55387f4e208e1a1d2c357f059e613071b765ad35dc2bbf017180. 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/JPN301200142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f48cf01d4e6acb924a9cee59b76c6ad6a207724be4dc750b880c403299fdcf. 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/KRA381001151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e56985534234a0ffa2e9ff1f61b2761205d4f71f99016884f4625ebfee0db4b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/KRA381001588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc931f895bdf3f2a1e4584686787472e7cdddf4074c8aadc9a0c25f21b9e7ab7c. 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/KRA381000341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e385882c08923429bdaab00f6f29fd67eae2e5503bab6456149a3847b23e30f. 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/KRA381000342.