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 0x9161382493102cadf9ecb9cc33f3099a874715a61e6b5844938b3e0a4964e3c5. 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/2c2fb5a6-3a4c-43c0-88ff-403810973492.json and https://artists.proofprofile.net/proofs/artist/2c2fb5a6-3a4c-43c0-88ff-403810973492.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 0x385de5f0c95442a973e4de0efcf5374626e91fbf89639efcdc6b0efa9875ecfc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBKQU2255695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a527a92f6e953901f77a6c8a2ac9c1721365ff5d0d30923ece4eda3336cb6f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US3DF2256807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a4b3f9cd41a62addb9c1b92541d025235d129803e7888bf0b3b3aef9dd9d45. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEQ022291617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a759fc30ebdaceef1ea3cc750546b3db59ca75c2dadc86717d8108fdf3d3927. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T06:59:00Z), 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/DEQ022391898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9673a981c0ab5f9cabe2c595f654d7b9fbbca659887b70691cc534310fb501. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/US3DF2527818.
Lofi Girl – chill beats for LEGO building
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98cb1b966a4d900f5c4fa9eebac70f23942d5f856570618f3df9327c9441e08. 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/UKZGC2306969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636532581816bb5ce78c857d2bc17b4a9c43fafe6a759001b42e4186d9b425c4. 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/US3DF2496713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8198d6404223e97e0ebcc0ca58d27e9a6c5007ea8c33f3cd6e4986a65ac47b48. 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/USANG2411718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3578e82f78c118f08abb84521a8bab5d6d68876a60d894f16f5bcec7112e16. 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/GBLV62204903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd409b66401b07d4f47bf1c63a1172080e0634e29bd5035384da8f75ab35ac530. 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/GBLV62204917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d8f5c5708db150c2f88eef60c040ca60b132927dd3f93901acb1cd2d3f8e93. 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/USANG2403213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aec0cfa03eb0a00cc1e7b0bec01c3714f54dd52f8b0590da1c768fccfe10098. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USANG2290937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427ceba59105f63499d829e79f78646969c2e4c5939626d7e1ae51123d9e123d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:13:32Z), 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/US3DF2474143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76aa95e9ea554d082e171e1602ec02df4fd8dc7ad61cb2f99246b761854d24bd. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US3DF2455194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81bd48e91d7dfe7d558b35f1287d78ee5c09951f12f3286d09109b703c3085d. 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/US3DF2431581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1227d64887bb3f6268bad67e6fcd74ff4b218a35256d4a4de0382a629439d9. 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/GBKQU2278943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08421a5c5d728a7ffcb887d89c76851615ebe8fec066cf15d5c5f0d9561ce923. 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/GBLV62118096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874d160bec1e86bace337c1fa4dd0cd83d7578666b9359771f589ed85df7a4a3. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QM3DF2254252.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bddaa2ed737c8edd7b2d8246bbb8d325cb6a94a625025fbb99e2b56182025fd. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USANG2411709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0150ea76c3ff23504384d6c2c9c7c37f248a02d78102bced7d2a9e7a56ecb17e. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/QM3DF2252657.