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 0xd47ba8fea5942545cba935dcd207eefa0b81866463cb0af80a77107b3315b668. 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/583e8068-f61c-417e-bc55-9e65cda0581e.json and https://artists.proofprofile.net/proofs/artist/583e8068-f61c-417e-bc55-9e65cda0581e.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 0x7cf594f27ed00ace7e3a72569244e5c0a55b8ff4c857ec0a0592e753f17c7af5. 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/JP92N2356639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dab777ffd491482310f63245ada70172c0ceb51b96e116d8ce8d8ab60b44ec2. 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/JP92N2322730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e534c446f20f114368c062c775b213eb9d1d3dbe5cea9a075f2cd6b374d330. 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/JP92N2352176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac74f5f543201641d6e70cdd5681acc028add016ddbf6de3aa408a773d71409f. 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/JP92N2322732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5aebb442110a265a944ba42609e4aff89b2b5d37f6d2cb71af68cc24824ea1c. 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/JP92N2385021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a2b83b8dd0c07aad570fc277f55e2d71a18a19c900b4652600e0a778cde133. 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/JP92N2385022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4967f20f00af7b668027dc9cdeb9ca8ecbfaeabae97052c6458783795396644. 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/JP92N2385026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79806846fd8d055b5cb71a274e6afc006af8e3e373c9fab9a1412f07b83ae9f6. 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/JP92N2385029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e534c446f20f114368c062c775b213eb9d1d3dbe5cea9a075f2cd6b374d330. Chain 2 (Bitcoin): anchored in block 957227 (2026-07-08T21:49:37Z), 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/JP92N2352176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2667d7a50428e1d718cee9f8b25fdaf40c94d86ce33c74502c6c9a9f9be6e7ec. 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/JP92N2278534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1440cd690784509c127e074736a46c3ac7c993c0594d39ad121cfb75ebcaf1b. 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/JP92N2213455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b148c8da71334797c342cf21adc263e691e1d38338eb4c0e1072d7d027a2a7. 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/JP92N2278541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7b3fc63e1f8147dcd40e1ab1ca5582c6dc801f393432bfba146a82fb42dddc. 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/JP92N2278542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82170287ad990cbfe7817e06b7e4da13e4235c86f4411aeaa280edab743df81e. 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/JP92N2278543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9b39d0d78ef311e863609a6afc0f9ef65132b2bfe04dcec87146ad75d4ef90. 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/JP92N2278548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528003eb81b11d37ba2a18d576091a426577c6f3ae52bcc99221c46d41b317a3. 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/JPB602147227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6915697dd924dd869350ee2a8e2713814416efb182f6eee5b9e01c68998b4b20. 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/JPB602147235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a66d746be6fd5f2af89679229dab9be283fdb70cfbb7cfe873f5dff28749e7. 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/JPB602177454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0258ed86c3685286de28d29dea4ad1793ec022ed87547ff36a61b3439189754d. 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/JPB602177458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024bd77805fdc7f0852a9d09bbe74cc0a6a3198a86ab8e940c5609ed21b65f29. 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/JP92N2425151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0489d7b2208849ad10426d1e59669d0b9caa1951f11d8bd8b206f4585a3e5549. 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/JP92N2425153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120f88e8e6fe78994e94e3228747bb1720adbf0f435f7eb368df37ce73db6f26. 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/JP92N2418892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c7d797ba867816dfb31aec3eb5f107dbc69b72e6b80113986cc25a6b41481f. 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/JP92N2406060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461d6781b8f9f55eb4cccdd999d5791cf6b5fe09c26ac84ee9a97a9bdc99b328. 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/JP92N2356638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf594f27ed00ace7e3a72569244e5c0a55b8ff4c857ec0a0592e753f17c7af5. 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/JP92N2356639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dab777ffd491482310f63245ada70172c0ceb51b96e116d8ce8d8ab60b44ec2. 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/JP92N2322730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ef447641664ab409e3652ae7d91378c45e2bf8d136f5bd32025f0a451d4581. 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/JP92N2252753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9cb141eac5a0d84766e54c7abe903a16f88c031c4ee7abb8cf25b67c185b21. 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/JP92N2226970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4df2c1fbf1c9ac4c19fd8a62e875c035793e8182579e015de52fd1c7e1aa46e. 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/JPB602180864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c477d46d302ac37df716b0832138aba8979ac364b0384a251c692b42ee4b74. 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/TCJPB2483767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adaec05c955f8f64000295da4a469cd2e9fac3a36a69c436f1c370cbd94ecef. 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/TCJPZ2456459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc299bda1c908f1fcbf3fc28f649ed21c85f765fb20ce3cdf78d86a4003601dba. 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/TCJPY2489114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac685429ed993b7edceea03cbbd726d82525d69529b7cc736b8e7df927877fb. 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/TCJPB2486962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273791d2ebfec77420934c704585314c9f10d4f49edc55daee128b7ab4f324f3. 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/TCJPB2487420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142219b103b47656d84228f984d80bf13743c67a1da85e1fd94b3006704f5485. 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/TCJPB2452199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142219b103b47656d84228f984d80bf13743c67a1da85e1fd94b3006704f5485. 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/TCJPB2452199.