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 0x682409e58a267371f5c7fc1e828820145d11268af7a870bfd4e390b4af989564. 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/0f4e7744-43d1-458f-af1c-5d9d769e9d4a.json and https://artists.proofprofile.net/proofs/artist/0f4e7744-43d1-458f-af1c-5d9d769e9d4a.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 0x7f4ee92bcfa113abb15a4f0bb4bd523613004baa9aadfa621cd194116447de03. 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/TCJPR2289444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f2ceba8f2a9fc237d34cb335ecf443882938d433d15c0ba13911be4f2d4b80. 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/TCJPR2289449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fc71b67dd59289f041449c2c6a65fd4ae88fa96d2245521f856b7e6a30bcb4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPV501100963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546f48b17e4210758fbd152fc4e4c2c31f06f893e683cda56477829c0a6b0306. 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/JPV501100964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222e29d68fa0e798a268c0eee082d3374bf09ec40820f2211adf6d61778fb186. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPV501100965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad0765ca250ab9a990e9c0e28d41bbdaa113f2cb97698279030a23f5f505546. 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/JPV501100968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bfdd1729fd5299327a13ccdea8c18dfccce93b8c4d7ab4d233d91764946c399. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPV500800333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e427653794e07b84d36453c1865de51880571970d276c7830c38655f42fa0a4. 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/JPV500800334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94692b42b60f6ae5272d59de0f8c15a0504c9832a4696725f26798f4e2133bb. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/JPV500800336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc737b4a7fbb75f081db14cd466e984c432b14e3bdc7b51fb51b7a78609fa2050. 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/JPV500800337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7a690d29d1f75e1622955c3b31faeaabbe23684490a1eac411e5221e13952b. 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/JPV500800339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ef1dd29f60723cd366653932a756e695fa43cb3156d205f1996c77d35aa355. 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/JPV500800340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5247e2bd08b4e9e3ae3e945eeaebd6e67ba5c754936abf1ef8496daa9a1d3ea0. 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/JPVI00507120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0097cd2cf40ec6c75af2c7a9c94be3b73728f71fc6ca6578943a114328753553. 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/JPVI00507180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca03ed37c598b8e9f75f4db1f5604a721da450c6f7899bc5ef2f67a96e280eff. 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/JPVI00302920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cd3fdf9166815db9afcae791bc564a3e1b64cdb34d65a4ccf3c2c527894dd9. 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/JPB609906702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b278cafd4e4a18f922b495df404508806f84701ecad2f87e39ceef513a8cfd. 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/JPB600014501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fc392119c17ad1c203e4473f4c73c9de24fb67d00c8227de23f7dbefe2010a. 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/JPB600014505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa598c50c946026c45c52d817fcb75ff9133afe6d5057ac56a31a92b329708dee. 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/JPB600058402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd013c458c586af99c42f4bc1934d2c0971690be4eb067043c070477b93b6e66. 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/JPB600119502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a83e39394447e82ae1285d68486b6607ce90fbb191e7595c549939bf6504138. 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/JPB600119503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa598c50c946026c45c52d817fcb75ff9133afe6d5057ac56a31a92b329708dee. 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/JPB600058402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e6ec16e9ff825e0c149d6aa18196a79e2c7816ffb627e38b161faa432a0260. 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/JPB600031002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656c065b51887b0f83051e21463b883d7cc28998051d58cd8d8f3bb48730ad4d. 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/JPB600058404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29aba1d1160c0643e598f92719480057b4294ab46b2eaa993f5a0877227ebeda. 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/JPB600058405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbfa013f01a3d52dcd289c173e9562c57a180fee72acb2ba155dd7f1532ba05. 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/JPB600058407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b8146b5ed67b96a5f6d4b93c2856dd2ae282ccf1fdb83db47c6eedb0996800. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPB600039211.
LITTLE TEMPO meets Voices of Flowers (on the Ron Riddim)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b278cafd4e4a18f922b495df404508806f84701ecad2f87e39ceef513a8cfd. 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/JPB600014501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba0f3d202991e1ea696ec4a8d596542cdbafea28447e64750e769278f15e695. 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/JPB600014506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7f733b017914d7530934a7622433213b4c2544f43fd40da0cf7b9bef210d38. 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/JPB609921801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85735e528d81ec09f038f88738bdc45f9e3e03c111c304f7da62d86c86841a1c. 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/JPB609921803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed693abcf09aed5b20736f5c8bde03b18378687c9565769962c505624d90e04. 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/JPB609921805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1137d9bb8644d0d5d4cc62c57e6698ba56e43d3e54f7022a0dc90cd8928cb3d1. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/JPB609906701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b2309639f085787ff0e9ede708189d786af93c2477a72fef25b9d2e6e7a0e8. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/JPB609921807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb9939ae7642619a4f4d606b28b8b8367cdaf94e15557c3fc073645adeb427f. 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/JPB609921811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca3629bd14ab496ddf8ce31f7565a219380e9902c41a91b05fe074c1a447a1b. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/JPB609921812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1137d9bb8644d0d5d4cc62c57e6698ba56e43d3e54f7022a0dc90cd8928cb3d1. 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/JPB609906701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cd3fdf9166815db9afcae791bc564a3e1b64cdb34d65a4ccf3c2c527894dd9. 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/JPB609906702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848daee6fcef0884f1cf3d25b025da21474d0fd610168052409233f69dc755b9. 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/JPB609906704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74eb4cf57ecf7199ced6a2fb4f2e078a0f5783b08c5cfbe16a690c29f7241534. 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/JPB600319502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974e3e2f37c5eec78976593a9be76e7cbd91966633d3bee9e804ed65f157c662. 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/JPB600319505.
Oto No Wa: Selected Sounds of Japan 1988-2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83b8ae1b34a4b28033f42937947f357513abf1a750c86a5ff291bbee0665e8e. 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/JPB609921802.