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 0xeb2310716079acdcefeda0cf64d4258d162bc3940bea1443cb645dce6289c443. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d224cd99-f0ec-474f-b77c-07e41c98fdf6.json and https://artists.proofprofile.net/proofs/artist/d224cd99-f0ec-474f-b77c-07e41c98fdf6.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 0x639ba8f24d90ded07bad7b5c02326996da09d160c6a1a2b2a1606e2542202ab3. 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/US83Z2330910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2380b9743ae32e81ccacca554c925fa5adf860f1c46510297c3dd866bc46373f. 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/US83Z2330912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9813a7ad489f651bd66968508bb2dea86a79219cf83b416a812dfb8a2feebb75. 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/UKN6K2201410.
Cloudy Days Often Have the Best Sunsets (Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3222d123c9c2467546cb0222ebaea12ddfb767bc83634b422c79ad259936e65. 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/GBKQU2405237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28470769c8d59cdae79524105a8db9d01c031d2a890278bf1517cf9a14c790e9. 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/GBKQU2405242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa98b27c8717c547378a5c2e823a4d610096a61d76651c7aea2ece83466edf1. 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/QZGWX2209928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358cf7432f2a4dab63d4db1329e66681234bd409778140afae82dfa0eb3957e2. 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/QZGWX2209934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886f25e34f0cb1bb205d5e8395413b3d2da4029cc066394d36a471317321ee4e. 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/GBKQU2260506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2660f55d17d16664d7d40eef4dcf75293353703d094b49115bba1f893e2a85d. 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/UKACT2132526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504aa8cd646524ae90f4964b975282af32597715bc2952841dd46bfd2b7b91a6. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/UKACT2132527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49928dcc46049fb7a691ec0dec4541e57a2dfcda7fb21ca35cf6f38708123183. 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/GBKQU2310609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b17363f77a08ac06b527665a9ceaedbae883f024fb0dd5e4e26590fad54d56a. 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/GBKQU2310612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58883bde13e9efe7ba354b91cdf3cc2236e315419f2611b5203e1b8ccc79363e. 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/GBKQU2310613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f96a6ee6f785b6e9a8d11339e46e3aa1e9186c3d65257459bb397abf6b7a1e3. 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/GBKQU2310614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbbdcadf5f1d3c2071c52d01e19850ee408685c2bcb9edd6944633309810467. 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/UKN6K2400397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264c29d5e6b0ebbb63d691553e62f2f895504a8bb8340905eb980fec856a696c. 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/GBKQU2236175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf167f5b70c37d92c2afa5c3331ff895c369a61559b1f6fb527eaa471d1461f82. 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/GBKQU2236178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fda63be09ae5c14b646134a29b88195d0acbe5d5fcdca2716ef49ac51a65f30. 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/FRX202024509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9697e7b4258e3bda15495a7f1d6471bfaa9f02110029b9eaca047e4c4f547b. 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/GBKQU2329404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3ef1852611111c72d2963ea8aad6b3eb0e8b1d2fa97ab1fb680d8d50a19e4f. 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/UKN6K2003063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb084b56c31361b385073b2d056ed5e3f618a6c88ba15e7ef7a791bc15959d07d. 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/UKR6V2076128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499707bc5aeb135ccce85f6c767ab156b0dd07cd71ce22125c7264567b27f16f. 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/UKR6V2177561.