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 0xe28a2a3c0f2841cb2c2907eaf1cc51bdb69c8a12456526b8e7a43a27165a08c9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ea6dc01-dd1d-4c18-b879-95dac34f6933.json and https://artists.proofprofile.net/proofs/artist/5ea6dc01-dd1d-4c18-b879-95dac34f6933.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 0xdb5a3cc609b91b722d770bab1eeb78ba4c592a073bd445ce51fbb826d3cc27fd. 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/USANG2404821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f545dd243e664c9696ac95d1279e50c6b6466c4cdc41057cf7415ea2419c137. 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/QM3DF2485358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda20bfbf86abf205f083c187705ae00c100f1e5d002bc1487e6393ab25b909c0. 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/GBKQU2323574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637b762ece31da13528e092b46c5840e7039aba76d74e32e5c87fb04a27c0d4c. 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/GBKQU2323575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf008630daa6e42968af0df40c0d3110edd097a390fd0490a58cca9f950d5c9f. 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/GBKQU2323576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99d7382fd92bed9f3e86c79653fcc52b60860cae0ff3d851da173a0fa5f5c6c. 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/GBKQU2323577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe9e1a4a85b295000918f871e23f70b71e3e0aeedd57ca1237cd44b710425df. 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/GBKQU2323578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7e119caf973bfec1f6a02682982709d5829284b0e9f03707cf918b2422af52. 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/GBKQU2323579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f103423841660d5c8f97360f268b01b5cf5d1c03ab834dd00b7867e1dd93a5. 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/GBKQU2323580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47999f394ecff85b973622c33fb961a6329305f8a166a4bfff80b2a34dd32287. 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/GBKQU2323581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929f8a01984c682b04b06412246d243631c90ed86d58bddff0eca3729bc7baa1. 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/DEA591315404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ebb2d663595309f2e1a38bd31056869c796295792e8c3853cfb7b66edcf888. 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/FRX872442297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7892d79f9c01f3f68d31563bd39a39f0f86f7d5747fc35bdb9e39bfe2cc569f3. 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/CH7812416101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0462e4d37a42836bf3e831c9fb02cbc1058b9bcc60f19a86d1862ce87a0d0dc. 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/USANG2421498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329f4dcc5bfc41de9041b2e7117e23f8bb40600c277b218d54695ea12abd50b9. 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/US3DF2491602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf5437d2961c46b4f86b16c8a876d247749fb958fd4f02385e6cca421c950f7. 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/DGA062469366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ebaf47fd63654b44939bd72c079eb92ed1286e351f51d61bdbb97e02eeb3e0. 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/DEFF42400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c503c88dad5f24252ea794dd6f9bd62159916c3c70936844a3f9ebac09e3487. 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/DE1FB2400199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025809980d435fd7a1948970541ce7419c1c42f450bdb8261f082bdf1a0c588e. 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/DE1FB2400112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e248fc8800baf3f0c870755bc4dd1f0dccd4682dd3932445d814c34ae09af2a. 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/FR9Z62400239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a4a78f32de04e1ba7e74a2e6c8fe5edb887975e5bf8280240eea09d0d4fffe. 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/DEH742415844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211408c3fc9c2cda284fe447c73126cd030a8062041382536f33511783d5b5c7. 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/US3DF2438969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570c106b63c2c4ec938198f87dc84dd33f33bada3f1529f139d0f1e11b173f6f. 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/NL4YD2400140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9598adcb4f9a818e0d36f773518a3098463bb803de9eb51632095165205572ad. 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/QMANG2255544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac045890842e3c0121a6da22196180784143a6e890d7ddaaec299dd0bf89ce89. 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/QMANG2255546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61bce4f10ca884075b9b51e4ec14305319a6cbc5dd45b6d9854953d8657bd71. 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/DEFF42300092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4edeb22b4e29ac7464ee0a214ad0be97d6c7e9fe4c6db18edea4dec48df7f5. 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/QMANG2220655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d57740824a4ac397150dd80aef0db90bb5c7eb0d2bc648b6a60732657a5ece. 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/QMANG2220656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2835ce7af4a408f25a6fa0d3edafd7c07012013d7c0bd7b7fd1f848a77ab9cd. 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/QMANG2220658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7c2a65644d12170056b6615b1fb907afdb5508050f895f413c2b3d086f7d7c. 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/FRIDO2314248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769ad16ec09253a008b83d55011a96df67d781276f89d0cf9f431cec0a5c2577. 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/CH7812359654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96caad747e0ba9ea0ee72fe8dfee37e026b194ee85ec7929676e5573fb17dba. 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/CH7812359650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4edeb22b4e29ac7464ee0a214ad0be97d6c7e9fe4c6db18edea4dec48df7f5. 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/QMANG2220655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7576ee891533644e39baff7b7b5a960bbd32de7e966118f885d00fcac95c9119. 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/QM3DF2274239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1261822540232fc1d7e70dacdce1ea7016dcd284971ff399dcced440b8db12d3. 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/NL4YD2300162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1015e1c56fbdb96d9f4eee1fdaa0e5e7b70990e6bbd29c58f4259d0476fd99b1. 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/USANG2277497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cec487929b885bd3f1b1907399c6daf3d641414518043057b5bc42e241eec6b. 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/USANG2277498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba7f0e5f33411035b9589020c88e5030d675cbfe22be654ba2d20b02e222d9c. 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/QM3DF2252806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059f5256327fc8fb5730e886f0e31c02e96b5a4155773135a4176c13aed50c92. 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/USANG2242555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e248fc8800baf3f0c870755bc4dd1f0dccd4682dd3932445d814c34ae09af2a. 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/FR9Z62400239.