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 0x05ae2edf4a910e7bbe904adfa7b537b5013605613a6d50cdc4c7beae33d11f69. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c510bcf1-22ee-4cfb-b2a4-0485a80d0511.json and https://artists.proofprofile.net/proofs/artist/c510bcf1-22ee-4cfb-b2a4-0485a80d0511.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 0xda7c4576c5b64dbd10807a562d58a5537e647b737f13fd83216bef5eee7f92f3. 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/KRMIM2327559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab615760c0883ae088fda7dba40e98860fa39dd9e63cbb53c7f5982db70c3d9. 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/KRMIM2335490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9264701c98016c4d21aeebc453ee7001377140ce5939164538b23a4cf7d68ce. 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/KRMIM2335492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d95936e9a62ca4ea050528007d33a13ccf7bf891ee984c123c10481d168117. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:01:27Z), 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/KRMIM2335493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55e70c4f52962cc2c836747617b47f0a8b81515bf2d5192d500349651e09755. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/KRMIM2335494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22162adf0ce4341d8db4fdc8c2320f51215b735f3daa50fd050446e4e0bbd395. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:08:30Z), 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/KRMIM2335495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb7b1c242d974ec53bf6c824720ae6b64f735be9f0fedab4daeb560a993ec82. 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/KRMIM2335496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c7962630b4809136300b59de2d207ce6b5e78336395ac2977da2e1034cf3db. 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/KRMIM2335497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77361cc23b612c169ea070f5031d9d201e3405e3cc7a1f8fe93c932261661bc. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/KRMIM2335498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad6fe98777b8dff03e108bb27ed402e267edd033e4b422958a53bc262b749c0. 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/KRNAR2318735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd903e08e2ba54db48817215b9e783d8f4f374e4bdf0152b2630c6b9cf1a831dc. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/KRMIM2445623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69dbda8f364bb6b8accbd79c913ae6dd2cd5cfa7ac1f7408e4e2af6c46e75137. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/KRMIM2457297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff8bdc2910ce8c1c028b29bd09e9606a85239878aa8c045d66c1f0e6dece3a2. 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/KRMIM2467840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3917d6111e9d457608537f0fadc075dd675b352f88ed5f7e8ea02c734ffb4e. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:54:28Z), 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/NL8RL2543508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6efb65e031670978609cf5577b39ec39887ff8bfb74a25407f01060bc6d0d285. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/NL8RL2543509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b92b314bc9f5207528472a6fb5bc0795950234b00d188547aa38f27cd84277. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:17:28Z), 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/NL8RL2543510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2417ab01cdfa3c389b4850aee1a5d31f2d54601265d8f5e5dcc389737a1274cc. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/NL8RL2543511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc2c1b481ec5072b04f91a53759442ed82b103c32dc748f096115d9bd509d58. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NL8RL2543512.