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 0xb9f48f9e671f9fb42ee116998fa1ef552e05d36c30b90e9958e1d4a9137c85b0. 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/ffab636c-1e5c-44d0-a6a9-6f99c887b50f.json and https://artists.proofprofile.net/proofs/artist/ffab636c-1e5c-44d0-a6a9-6f99c887b50f.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 0x31cbcc6ed6bc03af550c4fa9828ef37d61de878321492bc546be181993defd3e. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/TCAIA2427873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd50737c547e66a3e4271273a44712cb430d89be2708a60d399e4fce2aac002b. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/TCAIA2427922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7e375deab0165af3d24d249b19ae51ff93a42a2277d638b49d0f203127a2be. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAIA2427942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a4b81810893867a6c5fd664345e3d34500e059257d69b23841918f74273b1b. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:54:59Z), 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/TCAGL2278322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4011c0b1f3f06f5d1e25ffdf31fcef3d24f33693720536554a1774579e9d3f. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/TCAGL2259087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac49e5763ec660abfff920e6d4eefc742d53356ccf83197b2d1777a5d8335d0. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAGL2259103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbfadbc53030227cf54afa1d6b309a2834b0e34a20688f9ec6c458740def9b8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAGL2259157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5b7d09866de5131258d32d8a4bb5e07e7a7932c7e418b3d8a09d4f2de5568b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCAGL2259166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48157e99aa43e1c3147bd9bb9da3f5da6983cec35c4bb65341abbd5ec1c4c685. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:58:54Z), 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/TCAGT2330931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73a0f8e5d5fb7b0e9eab0e38b31961d2bc1f32e72b946b4ea078182e0eb8578. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/TCAHN2359240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9da04d672d3261738026bff7da1c1c453e9cb268877d30b074272e0ec1489e. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:55:01Z), 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/TCAHD2302646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cd9512068dc3a8dcd3c61f16e5c8401fe56478c46a87a57c25d0c72b39d3d8. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/TCAHN2359519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73f6fc46108aa1812bd96616e149ff5ae227239533701eaf70cdfd81f41d101. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAHR2307688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8564b42b61794dfda8f0d6dfc8bc9a97ac05f73b07a36cbd80d9e1ae4b9663. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:05:36Z), 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/TCAHX2445778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f77884d890b04356f313fbcfd5efd3818eafa2d3d2ca2901044c4e1132a846. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USLD91757786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac347d7529773b905fff6abcfacae56d300d67f0d8ad165f0859a70da3d9e97. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USLD91757787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9e87dc2cdcc4acbeeb8fb1e9af6e90d766808e8522055b863d5f0e45f9cce3. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:45:49Z), 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/USLD91757790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b553617f822245d17899b754c6436baf1d732c575e7642a52b59991097443ef. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USLD91757803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c69e54b7133cdc111eddc99fdeaf7f937fe1274d70d9ebb9dd0fac0fb8980d1. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/TCAIX2459536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325d70e29be7e2f0e5756a1843bff87f57594616751a25de5e4265619bb03244. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/TCAJC2445220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47d0575d5e4741a275b691667740539edbed4ffc5dd7a7770d2033063f5af90. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/TCAJH2527101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44cfab93be56834165b6d820e4ea622f205c659ec668964af751e661a03c4f52. 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/TCAJI2504998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2d50d5a7df05be4b2246cb643af432e3c3cb552d7df70bf8ca675d70b6484e. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/TCAJP2550040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3654f4bebb0c41d9a30061eb6aa16ed032a2a65569d85816187ca6ba46f0d018. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T17:03:00Z), 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/TCAJP2576371.