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 0x607ebd6d36181bd45de7683961ebe81ed07b2c462259ba7db16dd86e6b89aa2c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c070cad3-425d-4fb3-b922-ede3aaa25b57.json and https://artists.proofprofile.net/proofs/artist/c070cad3-425d-4fb3-b922-ede3aaa25b57.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 0x4fde5082881ae9107addb9813f649545d548d6568aec9e1b79603a8e3272f3e4. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:03:23Z), 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/BGA261110503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7638118f3a7870f1191f2011c6c3c56aa3b41f2d072536c870dabc31feb7fbb3. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:02:11Z), 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/BGA261110504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cab144650fc9ee2eadf7c07a935daeeb5c601f3b53b5f4456b1bfd7f1038c7e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BGA261110507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ddd329c2945a4118a7de86e86a2d498beeb056aca69dabe0a2db87cc53f321. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BGA261110752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7883f984f2b7d4075dae4102a475ccf038665bcfc979503a073326198a223c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BGA261110760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2058bc30780956bb04215917df4ec4d3776ef3f2ba38c79573edfe356f0b514e. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/BGA261113410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a84fc3c781809a98448be9fe9f9466924f97dc2754c7758154689e361ab857. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BGA261113412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624b1c7d8deb2c80cb08866f5670694f232936344c6ac320563863b730acc39d. 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/ATAJ11600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e13b2cc8061bc3953e3b11098f10cbf560f2ee3be079a343488b8c7418c105. 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/ATAJ11400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd2c0184a64dca829c5823b9fb4e32a04e4202c5e1605be3a583373b39889ef. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ATAJ11900378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc5dc052b69320b205160a4ef52bd113de84337e87656a3aba2bdf3cbea5695. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T16:26:33Z), 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/ATAJ11200118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8070b67468df0000d1b70c2d5d2acec22ba43a3d1f6af32e8b4ce7758685525d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/ATAJ11400255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0011d8ffb9e43523661703c4df6a056e82b8e9a951e3500795275f04c1113f2c. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/ATAJ11200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f48ea8c33be2ddfed0cfeb298d18e867878651775232f6328442035bf51b41. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:07:54Z), 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/ATAJ11200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2956f70e5ab58d42e31deaf4386a62241bf56334fce58d0e8106c0739e0962fb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ATAJ10200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c83a2dd74bc3dbffa78ed3ccd0841d1b77b9bf8cd8fcdb2e7a6d8d0f71366f1. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/ATAJ11200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef7b7a512274f41ce8881f656ea1d21267bb6f34b2d98864e6c2ac80dc6207d. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:37:09Z), 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/ATAJ11400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeadfaed32f36423ffeb3049b539e0edda9e53529f1a960f23bb935731556b67. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ATAJ12100569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f62d9fba5db6fcfe075495cf240d08cde6c66165b987ab0dfc2cad41c0f6d3f. Chain 2 (Bitcoin): anchored in block 957633 (2026-07-12T00:19:47Z), 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/ATAJ12200429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78752ebfd8d98cb16084d2e9d9325a8456d044664a2c41ec85c1d3f9e8cd13d2. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:10:45Z), 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/ATAJ12300458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4839673d90319e5c90351c286bfcae79c0b79ecbd06095bea7cf192588acaf1f. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/ATAJ12302239.