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 0x9c9d2304e57626fb0c27369651eff862c4f7f3eeb1cd54375b50f9d3ca532785. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f25921eb-52f2-4ef0-a045-4f77b3e96486.json and https://artists.proofprofile.net/proofs/artist/f25921eb-52f2-4ef0-a045-4f77b3e96486.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 0xbc28be84921496932004716191939d768ecd3b780fbc6ed558a1cd24e502e15d. 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/JPU902300139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2222be5c766082c8917203027952919c473cbfc04c20716638c1a08f07a30bd. 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/JPU902101341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc09f74d1d66fd41a00cf1019715cc93641b609474e8c7196288c7ac365cf09. 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/JPU902101917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8e8201f00a76da49b1d6a446436cb1c47b023d3ffa11111c9cd3551a20ed58. 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/JPU902101918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e6d648265e8b3a2727267ef718aca51bb6a0743a03ae99ca0623d91a6f5ac4. 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/JPU902101919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f07de0f7b65d14639ed896259745aded718f8e3bebc10821a4a3d0b91d088e. 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/JPU902101920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58dbca74a0e00b9ab1c19e081016c75c6e82ba3c3b56d35d3944bf0072a8a6b7. 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/JPU902101921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb8e382e683127e671556b764c61e7f0479f9a2c1fe009cbd5693c40c4fe496. 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/JPJ902206610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf7300c638dec576d28475d0a9808a2d34f5281e1f49bd719b895b05f0018ba. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/JPJ902300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96db095b6b0951347b01feff6087e099d144acc60ebed1865acef79e90dc14f. 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/JPJ902300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bd755369e0baefdfce02fe65b33a95a1899ea89dea26b83f902a188beded26. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:10:12Z), 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/JPJ902300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8934c3b2771ed9cd182b784e6fc8dc4106d9dfc4d12d8ff395fd31fce96b97. 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/JPPO02202884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed68ee24e24e087bbca09964fd43113358bc2265f32779863176e4146d9b3ff. 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/JPPO02004177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ed7f5cfeaadf4c0e88248ef9eba00b1d4967f1c0312a7bacbefd482cbe5f79. 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/JPCO01815730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe457a8e0b563d4e47c3223518adcac1000256861edafb2084712d8c71017482. 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/JPCO01815740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0684ee7c7d3237e31d54f5af6cfa06fd96bcae2f8decb8e1b5c454547aa412. 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/JPCO01815750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2855b3e68a1d30a7308599db4347f0b0cd6010134b6b3fb6d47bbfb2fd878a. 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/JPCO01815770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f5e2974aa3e1520371f265032cc395288112e15de245c524f29fc6f7a8844d. 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/JPCO01815790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ad43de610aa2eb75f470bb311c3699d3174b727f4c6f391e4850b18598f1a1. 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/JPCO01815800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb561ec32c402f4ba509646e2d2be6e84203e4600722567eae799e1f0e64d97a9. 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/JPCO01815830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa78bf7097e07db3b09d83e80551fd26809400d29b674f15dbc140e866fb71d. 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/JPJ901315130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3691f7f032fe594d7cd827ec2aff558daacbdd2c65e4ede7016ec770718cacde. 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/JPJ901315140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165d32d9e40b795c734108b0f2b9adafb3284d3be248a602ff6d26da10554e8b. 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/JPJ901315170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bf750c20477d88ff5a176eb460d7d3ea29d9c191772979d9ddb6c7b096286d. 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/JPJ901315190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbaa76674e827262e3943b2e47e6b3c5db764ab39586662dbb4b93f1fe0956e8. 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/JPJ901315200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96db095b6b0951347b01feff6087e099d144acc60ebed1865acef79e90dc14f. 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/JPJ902300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb8e382e683127e671556b764c61e7f0479f9a2c1fe009cbd5693c40c4fe496. 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/JPJ902206610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab837008541eee188d6b2e632ba294cb60eaa6b11ae8fbdb42e10b8f2253515. 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/JPPO02101832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5a50fe33fe46bb7c5d1a48882a2602fc1d3a6bcb343d66738c745e9d481b92. 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/JPPO02101841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db25b09205e1de5a35c4c2236a91e941993bc97695cd0473744791728022d70. 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/JPPO02101842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa22bde3306190ceb4dbe97ca47534d14b5b3654eddae5e321fbd447e9c21eb5. 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/JPPO02101861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bd20319b9b17c119bd66d8c3304963314ba4666d3257e978c32648e17b604d. 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/JPPO02101867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab48b826fc519dfc549bb4ad4f5bf46e7b45aae116b639ddda330b7c329488d0. 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/JPS801404663.