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 0x93ccd001a652c6cf2a17af79f613c75390e48741d938243fc9a9c94def15eaf2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/082a2071-4dd4-49ca-a3cc-a02580ddcb20.json and https://artists.proofprofile.net/proofs/artist/082a2071-4dd4-49ca-a3cc-a02580ddcb20.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 0xfc8ec223989a4f8782274986d7ad40c53332c8881d968852307fde64ed8a64bb. 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/JPB622202088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141f6446ffd59959a08ba3dd2aee081c2a2db3d97fccb7f35059fdeb879229de. 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/JPB622202089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d155427932e3938f8250c411a05bdf00be7f9df1053006cf288a44c276717c7. 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/JPB622202090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad46b413dc554c99aceaffbc23efa664d90e37ebf8f2a7c85fd71e3c9a870de. 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/JPB622202091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570064297be9a11ded3a68bec7b426cbb72a0c169ac4f1cc2102e6fd33fdd902. 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/JPB622202092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea0424a29a1df79598f6d5d375321caaf612875831c06dd1818f8b6a5cce11f. 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/JPB622202093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695d51e4ada11ca5a89a86559e0f7f973312c5a4b1654e039a9cd5f765ac61c3. 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/JPB622101381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf73a4ed9d6a7457bace8ed19f72cee665aa5778c3b1ceb45a031dae893f927. 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/JPB622101385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb731e4b38c79ebf27138d8cd482a16ee1baed9f66a5d9dcba3d2023721d243f0. 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/JPB622101387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fcc1d3be5dfe6d6720c93047673eb9ff02dd08587c7709724631e8f5783d102. 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/JPB622101389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404c939ecdea18d883c0fd46cba259267fb8ece6089d126cc117951bdbbdf43f. 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/JPB622002140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64435e0e4f30d3c53455462098ff595167df832e8686ebae387704d2411ea4c5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPB622002141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3ad44963da7e8c958976886195e769dd3b5a5b0937427d6714b8a189fa862a. 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/JPB622002142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4874ecf3a1566fc52d299371c96d8e81d8780e7b5cb8a46286b4ee61246c02b0. 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/JPB622002143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5c883a10c952e8830ef86856d25d5ce6b7125b4321c1167a830f5f20aa76fd. 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/JPB622002144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72caee51cc0b0cea9fe8a9d54478b884841185e9803e6467673adcbc89c02704. 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/JPB622002145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c52671a6aca165421f171c2ecbf6944176062ec3f6cec27a1e99593c648f86. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/JPB622002146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027d2b5c80bf1f5cfd4bb195df7bb1d5f25633ebb3c22594ecbea591b29f0551. 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/JPB622002147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1c6885c3b8aac33208f916e33b949658ec792a65f2b730944e5431188f1686. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/JPB622002148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650a4c8b7a2192b4e3074a3243787657563dc6b210460106e681cfd2b60c073b. 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/JPB622002149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc43e3697b0ab4d2136ea7e7054ae9cff32be21461303375d65ba9d522237be0. 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/JPB622000600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea25d176e3a8bc5b3d92e9bad78d1364dcfdf2d5a6a8f84a1e7fe71f996cb16d. 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/JPB622000602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92777d7f1c430900c1765073e7cd369df817cd61a9fbb2f7bee7a9c6524e4b18. 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/TCJPJ1978112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763f6d6424253fe6b745732b8db9164abfb1233b68079a14e20672856a4e503e. 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/TCJPJ1978121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2320e0372d251863913620d4c3fdd96f42f9e743d4ed699a23ffcedef3548e. 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/TCJPH1827143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584f61545a9d6bee4d52136a72b2a1f4a6eda3c7603280929448f88f7810817c. 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/JPB622400586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d155427932e3938f8250c411a05bdf00be7f9df1053006cf288a44c276717c7. 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/JPB622202090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf73a4ed9d6a7457bace8ed19f72cee665aa5778c3b1ceb45a031dae893f927. 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/JPB622101385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb731e4b38c79ebf27138d8cd482a16ee1baed9f66a5d9dcba3d2023721d243f0. 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/JPB622101387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695d51e4ada11ca5a89a86559e0f7f973312c5a4b1654e039a9cd5f765ac61c3. 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/JPB622101381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85d6e482e66c51b8d853174236b94f8fabbf12581249ec01e549e8cac850668. 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/JPB622100755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7663e14a29b4850b7cf0375340e0217248fb5cd474b7d5072d304ef4f8ef5e. 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/JPB622100756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6592ba23567ad70184b3ba33a2f71c551d122e364557bf17dfbaddf17feb4d8b. 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/JPB622100757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5dabccfd40c0f02f7c477531c678b53842c99b9423faaa3dfb00eaa2c24fff0. 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/JPB622100758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e035a1fa535b5717d77c59167f2dff84a5827cd920cbf90568cc820bb67083. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/JPB622100759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72caee51cc0b0cea9fe8a9d54478b884841185e9803e6467673adcbc89c02704. 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/JPB622002145.