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 0xd723c955f832669aa78b43529c54786db7c37a416e7a5bafffbc18bbc6b07c92. 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/89503924-132c-451c-87c7-bf44036acee2.json and https://artists.proofprofile.net/proofs/artist/89503924-132c-451c-87c7-bf44036acee2.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 0x2210b4594b512b6df420f361d6b4976164aacccb6a11a5e1045c04f9fca7a4a3. 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/JP92L2305560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405380637b697935dee387056b51db11080829e7cc7ae599b02dabd7b672627e. 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/JP92L2305570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63de1b00b1f5dcee6a92037ae661d2399e0220e0d1e3ef7ac2b73837da7b31d. 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/JP92L2305580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ce42f9514f37d4fa5f55433d9b72dc44ec6082d306dd929e3f6de22d47d0c5. 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/JP92L2305590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8bba98eebd2628ea127b6b026ce15f3c0e469ca62b9941a61bc27dc55e835b. 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/JP92L2205730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3b1a3cfedc577e3e87d878db05bda5f12c6c53d6b8fdf227031eebd333ce7f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JP92L2305620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c1cc17770870256289c74cf0c4f1591dd4e9fe8cd3d18ad2e01404f89aee1d. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/JP92L2305550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1645a1b34d3b772c13e7225e8b658b4fc251d0d91825442af9da90c8536b77a3. 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/JPJ901815580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c724d87efb7e1794e811019af98e2bb0ef510f4e566112a88d300043f7b9d48. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/JPJ901815590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f4c29d3b54ad7c890fc442361a9f0f9d186bbdd9e2f2d8cdec93260cc362b7. 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/JPJ901815630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b644b568375e2ceafde329997cbd74416cf24050c36e1c0caa00aaa8c3186b7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPJ901815640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc203ee670277337d6a86cf03b5e652092e8768721971d3d781fe2401a6e610. 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/JPJ901815680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcecdfe992a13393b78714659efa77a4a06b4b82370d895a4b0297ddeb1d3c53. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/JPJ901815610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd4d35649da3a43b1232ca5baf6344266316373f8ce61b6929230d0996677c2. 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/JP92L2307020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3b1a3cfedc577e3e87d878db05bda5f12c6c53d6b8fdf227031eebd333ce7f. 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/JP92L2305620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8bba98eebd2628ea127b6b026ce15f3c0e469ca62b9941a61bc27dc55e835b. 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/JP92L2205730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c326d3dfa7b3d57c1170792633828a3db746664a815b91e9bfed7dfaeb829fc. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPJ901912080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594b91d47e074b896e4acfe94493f793564322d4e917155ed8e6ddf667a8dfc3. 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/JPWP01571133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f44feda9b2d9e9391a7b5ce3bbb0c9fae90f6891ef741744f602c012ba2a98. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPWP01570252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0ebd771a2bbc53d5731819b2ba016f7f2ca8cb45cab763196a1d59c252e679. 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/JPWP01571135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3dab32af4ae1dba8eeff5cfdf2c9928874a5e6778c2bef0cb5cdd722267544. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPWP01571136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92abf2a7ae043c2709bb527e65968dc10b3db7c705efdbb6d5ad78d34247908. 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/JPWP01571139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ee982b2e6a29d532a68f27546c43140afa9d1629c0cdd9543ea78e9bee5704. 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/JPWP01571141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819bf8f08d9231f487858947df56d9e326945cd2238077baa025768939682700. 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/JPWP01571142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ad07c91783b14e7e41c690cd8d2fcb8a92c0ec47344530f969f74c7836b081. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPWP01570923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d198cb8c2d19eb412c4aa1174a690b227ebaace5208aca713261c956dfa295a. 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/JPWP01571144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b1bb32188e4a2b17797dc346a54c7a94754d0848ac239a41076e3d3b01a8da. 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/JPWP01571145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b6a8334778e329982552333514097554da632d6d1f13fb15a8057e5a61aa69. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/JPWP01500036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa975e9dd30cd161cd792ed488bd2b9c5a02b4f0788ec50cfcd5f01403faf1ed3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPWP01571147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332c5c0de1b1b6aecd9ea70be82dde3dfb2418b4e54b7c6eae156cf3c1104c0d. 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/JPC102300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b6800a6d139a5a1adc5bf9280f7c824cd6344eb9e44cefb7fe4075ae07716a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPTF02433901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303e0990be296b2a811ddcf12ea16be6354396e56214e2f48d0a280b3f414e63. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPTF02433902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ca4bfcc224b84124f1fa2f00567c0e1532ca972dcf78318a8f3af215c383bc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPTF02433903.
愛の言霊(ことだま)～Spiritual Message～（feat. Night Tempo）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f0735fabe9057a02554d2d3bfff453b252ce0cebb8e7c1c057276807cc652c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPTF02433904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168ef0fcb0d8c42a996007c4d7ba366fdd828e0815718efa78c93793a2c59b90. 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/JPTF02433905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709566bf0c33b378fcbfa0fd02c7a879430e8bf4ece3d4c08ffee6465e70713f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPTF02433906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337cdefc86e41c8f11ecb2400f67a3423640b175ca356ae89ea1ea20584e7011. 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/JPTF02433907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42302576784959914e13969b3b7b1f79a7296db59d8b97bb7ed369f48b9eb26b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPTF02433908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175166342dac67486a7b66ad829d013eec81a3736be7077ec2209733be147d3a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPTF02433909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7877328d1812b46db0a9e888209d08cdf85c6c515173f55ffb07e47420811e72. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPTF02433910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaecc82d79870d76cfa1269611df02e0124186eb2030ed379d7b082585d33289. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPTF02433911.