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 0x911b90629bcac29bb506324519307e1b3bb354739e5673a1f43150fe89acc016. 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/60566e19-e041-41e5-974d-cd089b51b2b8.json and https://artists.proofprofile.net/proofs/artist/60566e19-e041-41e5-974d-cd089b51b2b8.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 0x4c070aed21e5e72037b60ea7f5321e2d9f17efd36ee8de8da43d3d57e22f31d5. 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/BKRAP2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c08a60f0adcd3033ab54be62ac5da13c16ca1cf955b88f1083bc8f1af3e374. 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/GBKQU2022476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b2de5d0887008f4e9d4539f5841d005a183d18e855a13d8dbd2e30bdebe933. 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/GBKQU2022478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0192d704fee819a437f06ca1b0116ce1e5a22fdf009d8116475e64a05db07d7. 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/GBKQU2022479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6edaeaf8a4c40eef8ef2283b4fc6397d171e3115a6aa42b5b45de0fdb08a3acb. 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/GBKQU2022480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4870ad7224e04e45ad25755037dd8cad482d50468eac5a98110365501d0050. 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/GBKQU2022483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c2d3bde772c5227d3cb22903933c0350def2252eded768a5f3b04273a7e00d. 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/BKRAP2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7255663a4fba2eae8e16397b09edc73c63d59c97dbd5aed200b236dd485279f. 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/DKZVA2400171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca17dae3943f6a7d19886903613f139c1c28c4e0e951ee799c2dace7969aae8. 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/DKZVA2400172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b5eda4d6de53fbce81adda9a4932908d91c323fd5c34629de796560f574999. 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/BCVO92400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb425e78b76133cc81c99eccd76b7ecf040c0e0bde57e4cda7445b58e06df1818. 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/GBKQU2395732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c9f3a127a0f17ec9fd1a77f4f0109463bdfa0c1e3d5086e01b61e2a10554a3. 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/NLRD52319566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9740ad4514f87b873812d14ad62b11ff9675e4be140c2c95ee42bfc8040cb1e. 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/DKZVA2300246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae79707076370cb59df799c8ae46979c1d66521f53c2ab97fd265224fc809121. 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/QZNJW2376145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bdbe064f0292bd9ce0689abcedb903299780afd6a8bd35659dfa430a81ff7d. 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/GBKQU2336130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d6e29fe1dfa3017f7a95414045e79efe077d3259c8799f737d0951b70b13b6. 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/BCTI82300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8871ad08570f28331f62e2b6ec9dc65a40e667c51fc470851d00f4c09b748c9. 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/UKU932261044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c0eae61f8eaeaaab2a49c999687acc601174b42d37a7ab6abce97b4de8ca8b. 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/UKR6V2282096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5622211a663504b357769bf585acfff88c8421a0795f76422f7f1ce813f8ffd5. 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/UKR6V2282097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe97fef546737df32cc91ccdbdad53a6768e478a23a65dbc36c071bee3178a5. 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/GBKQU2250326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da23e30116ff1eae91f7c4a1be70e3f4b0a882a977dba512fff281b131bcbe8. 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/UKU932148600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcaa1873237f8cef1e8aa4c67df2c825a59e7ee0c9bc28f8b37a2e4f91c6fb5. 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/GBLV62113255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f9d8a53159e83cf50de71486e8aa30c2779f1367862e767c6e7fbb98be6221. 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/GBKQU2170306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cdf1347fcdbf531e54ce06c103519094bdb07beb2776b43697bfea8c5c8638. 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/UKR6V2172009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ade36d3d964e862e47ec4e827f8d27a727ffac7b936ace5f5af5bbb721614d. 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/GBKQU2100264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b47f30aaa675a115976b9a3e6d469e187ccf9f6657638a9ce35799dad3793a7. 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/QM42K1965377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3339de18d964f08fab5a6e3489fd0dba1962c8bf21c9a4007cebf6f005cfaf17. 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/GBKQU1960149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed213752bc96bff9a043917239d0eb2b093d55d8256270c3ca9fdd01ac048542. 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/GBKQU1892521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a90c382a6ea4e5084700d9dc86f6a99fb4cd79a99d8d3ebc0a10861c7cf4bd4. 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/GBKQU1882338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813e07b684e07e40efcb8af6a45607f425c7eccbe4dde4c1b7d6ff1dac823624. 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/GBKQU1835185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde52ed21e7c64411b64f8bc8590ad9bfcad750c81554387ea765ed75b337b32a. 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/GBKQU1764076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222eb92fa46a67f66437d465ccddcfd887b694c4b8b5d7a14ff800eb7797d235. 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/DEGA21802588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee36e7a9a18b326d7f9da1e72dcc04383e7accca30a9ce115eb0c40fadac2fe. 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/USA2P1915485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3039d08f14e99f0e7871819d9f47164b36676dd264575759cd61244ee5c23f. 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/GBKQU2029514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8974e80e2c952b4d8717ff3e3dc124205bd1930874c6f07678678bd023a66a. 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/GBKQU1650643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9740ad4514f87b873812d14ad62b11ff9675e4be140c2c95ee42bfc8040cb1e. 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/DKZVA2300246.