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 0x3a8c5ddd9ff46ec120d37fb7441485a25bafbbf74940cb15d65af04958dd02b1. Chain 2 (Bitcoin): anchored in block 954027 (2026-06-17T00:55:08Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/38d7cc56-216c-4f98-9309-e4ef66c138d9.json and https://artists.proofprofile.net/proofs/artist/38d7cc56-216c-4f98-9309-e4ef66c138d9.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 0x7e1f40c96ee2355e251f55c26fb89ab5588ad819b42453cde48947e5bd5c9eeb. 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/USL4R2438590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08d5b084095e1d02c2ad89c994129a2be84989c6266528a8cd8587f3fa21062. 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/USL4R2438591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35b4a50557cc43f0d89ade2190b1adbdeeeff1993d75785549c80bb9b550ded. 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/USL4R2465689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5deef6f10b8cae6c29249b9f21d30412f44c5114fef5e620a6171dbff2d11160. 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/USL4R2465690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c398c156562373fd2c526c6ab8be1b8fa176b2210beceaecd7e416ffd3b61b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USHM22490674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285b0769b357945ae1d2bdc044dd7ace0940dedcbedb54d23dbcf9520e3c4d8e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USHM82485289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6705b4e858c21ccc973b9e3273c3b96790ed4e025c84836929b691bf9b4890c5. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/USL4R2465688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b0f4496203ed437be41a4084f529ce9baeb87b3cb2af1dd98b8fba1854a42f. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USL4R2465691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb78e08080bebe96fe0cb8edd969b2537f297dd864703209bb5eccbfa56d7b69. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USL4R2465692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b776f778de6e4e974169bf3ea56557045c5da6312e8c9ae19920d0f9a011682. 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/USDY42565941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd7bbe663e7da0685b29ef0603fb8106fe5e3738a95f9e815e225ba86658e30. 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/USDY42565944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12223b62e2b45efe904117a2b21e2f6990b556999ead585c9ebee5de4876327. 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/USDY42565946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86dd166d8fefaf69983bc7fb76ae96632edbbf13dc3dfc8f817cda023f391af. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USDY42565942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce2f8aaee803a973a59564a6a050acc6c1f0d2fa5c2cfff729dd4f7ca79835f. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/USDY42565943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb0b21c01ac31664d744b2e8979fe9c77795bfad2569b67cd0bb155f1f5f6b5. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USDY42565945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c57cffd7f5178ed02792f040e1e213ce2ce37eb7f8acf601622257ee726a23. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/USDY42565947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db4822670913145832d587ba4d0da6dc889dedd040e585d204e4357bd3468e2. 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/USX9P2408703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89570eb7a3be9b86f261bf5e347271b8230ec55b4a1d41edfeb36e129a121e23. 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/USX9P2408704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47aedbb04fbd75894f39e178d9f5dc538ee3454f5b5c8c3bc6a05e408bba9057. 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/USX9P2408706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9410f9bd4c005ff797646e60fdbde971d142ceed9ab376376fc325fb065bb6b9. 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/USX9P2408708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511249906b2ae2fc69067b663d63ff23ce5c7c46c48c7690e41c5fe023f5595c. 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/USX9P2408710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0c882741cfb0b7d6a7be091f598c055560790d04adbb55cf7a59631a3b4d00. 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/USX9P2408711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f9d4be0948dfbb1481fd8c72a8f1ef3c0bb8e4e6bf76a137a429eabfff0faa. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USL4R2477230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9384cdfd71ed0f66b45c9ba098fb8a0111c8f03ffd2c4949133eaad1600c610. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USX9P2408705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe391c24ab5e7849d27044afabc43f48ac94308e9b5ae2fd995565c518e3a5e2b. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/USL4R2477246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5c026f2915f968412ecb8800097f99cc8a9ec96d3e58358468a0944ea11521. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USX9P2408707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba6a5418e8e03667553a99eca271cdea3a6aba36a80a253c38a44a88b4cc08c. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/USX9P2408709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88d3d3c91a3a989bf5194d6c789d629d9bb8dc903bf1ae4c625922d12a85cde. 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/QZPJ32330922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9570b8f5d6229276804b0f7c13bfb9d1110ff014c7dd58a38efc257bd46c46. 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/QZPJ32330924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d1382868d6e0268f278266031832241624e192c4c5d897cf40c57f26587e2c. 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/QZPJ32330926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c1c966cdcb8413697b3d7b173f5b3b167b3dc47ed91a0c46582c82046c34a0. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/QZPJ32312454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd40ec4d96b60fd66b71690e425ac3666da71ec700920a81fdaee2b53deeb4d. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZPJ32312455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf4f25a09ba9600694e9faf4c17951d8082276913cf2812dd27ffc1bfe293d6. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QZPJ32312456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fc2e7b25ee26f6ee7ca47c87f5090b05b8aed3caa2c5630df29d4c0450d430. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZPJ32330925.