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 0x62c950df1a5645c2df94f806de7e48f88e9e6e3895baf10690b236bdfdde2f4b. 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/8b8b1ab9-e6f3-447f-b83d-c46493f4c54d.json and https://artists.proofprofile.net/proofs/artist/8b8b1ab9-e6f3-447f-b83d-c46493f4c54d.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 0xa8ac1e8a42dd9b62622f7df85c8330c5fb44360bd22c87500c447ebf5bc58ce2. 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/USBN29400366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701b87e0c3056102b23746f23dfc4315034e0b929889c076308f0d43328eb3bc. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:35:05Z), 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/USBN29400368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e56182b9b7b47aa8823a4fad120191352f7c660763eed476c35f5e94ca0dd8. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USBN29400371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df0368f49aa1bb115b737564bcdc9a96900993720eba23c57cd5a58559eb8b7. 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/USBN29400370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fa261ac6ba6519999a1cfa1e3e0fe8ed2e0ef93d68b467aa9841ad218869d0. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T04:59:38Z), 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/USBN26400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce194acd1d3f5cb0a2fe911878d3b93b67627e2bb35e3f9019c9f025bdb3108. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:54:40Z), 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/USBN26400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5419d3a567f494a357115d90d490510d5e0ff23365a08e6d5fe8a1a84e9571a0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:16:11Z), 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/USBN29200167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed339fb151f9f63caefbf2f4c3b76ce23224496cead0ae81faea0dbda24268a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USBN29000141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348e50e937f73724edb747f5282bd5f7c5060d64221dc550fad65e816b6a2d5a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USBN29000145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352942a70589c721a0b51eec09be607adf3d3e02b5af6c6416cbfe38c140ec06. 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/USBN20200380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9bdbb080a39a42e5e50e4a277b43ea6ea78b12608d8d8abc2a97319fe0d33c. 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/USBN20200381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ee6a2ea8c5655a8a3eba13b4b16d49dc4f88ed651de8faf786baace1e93f0b. 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/USBN20700340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdae4235b64d7ca711bea6b3bc90e069b4d67471be15ca48b6486b4e44d1089. 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/USBN29200170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6de029ccdfcebe08f960a4c1ff37aa6f68184863ac33c7f67244af3edb04ea2. 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/USBN29300501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64eff232b4d2b87672e0162340761b61218609a45cc966ca85f8c0c5486261c6. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/USBN29300136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cb31e9447790e5332a8218e25dc6f68eee73d66a285e1445943a86ba8efd2a. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USBN29300503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ac1e8a42dd9b62622f7df85c8330c5fb44360bd22c87500c447ebf5bc58ce2. 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/USBN29400366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352942a70589c721a0b51eec09be607adf3d3e02b5af6c6416cbfe38c140ec06. 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/USBN20200380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9bdbb080a39a42e5e50e4a277b43ea6ea78b12608d8d8abc2a97319fe0d33c. 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/USBN20200381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc4c04b4fc6ec1c3a8b779688f9329a51e3857f2866f56606d53ac5f6f58ee3. 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/USBN29400549.