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 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 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 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.