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 0x3628fdb8b7a470c403b1744e09bb2fa231b4b6da47b54014701edcf2b7c4139e. 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/fd2f4316-018a-4be1-b8fb-35f586f0a9a0.json and https://artists.proofprofile.net/proofs/artist/fd2f4316-018a-4be1-b8fb-35f586f0a9a0.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 0x8069251612236b98542a3f28ec19fa1c6d6c8d057ed600ab2725d6fe32ee8eb3. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/NLKRM0802702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc373a304de78ef0a51cf64e445a15fd31f98e2a95c6b213f0326857c2caef0. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:28:47Z), 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/NLKRM0802801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec77014f7eca9fe66fcca59bc6762dd75d291902d4c326d7aa75ae58b3677f9. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:40:33Z), 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/NLKRM0802803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6436faef963dd5d4ff82b2c221ff373c2735933d54e14f586f0d0e5f6c9aef. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/NLKRM0802804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d7d53bd990300f63059da361fd86d554f76ab7af5ffd07477517e4ca046067. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/NLKRM0802806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c537e6782cd5c9cacc4eb3c3d724699eb6b067a257c4e9940a0849f52a1cef. 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/NLKRM0802603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75db2aaeaf8aa6779ce0527ac1d90967277bc16bc17e724762fda972a856341f. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/DEU600600606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5377026bdc5a04590e244e47bb4d699e575f82d050ca550f6fa75953e90d2bdb. 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/DEU600600609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeaa8a979ac6e0bcd3f7b19ad5fad6e7947eb6198268e3c4932f7d3366d8c91b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBADD1132602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6f585c7d2c400a20f3d8442eb3bbdcb40abc11d341fefae968124a9c49da69. 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/DEW272200943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34734f4618167fa6192858f915a0785816764bceb6041b9bd59eec92610f2f46. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:28:15Z), 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/DEW272200945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fea5e4ca9b9026daa131589bf3c137c92aebbf46e340bae50d555fe7f425321. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:21:55Z), 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/DEW272200949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d04b5b55d5bf332ecea0cd2d6a64c044aa9e7e9aba73c8662205f43565f7c28. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:57:01Z), 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/DEW272200950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0604c8e01d0874ca3176586b78226307065361dbd570de6ccdf9bfe6c8b8d2. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEW272200951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d26e79ed2895ea75699dc16df0eedeee914420f65dcd2dfa8a0473297b0bac. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:07:03Z), 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/FR2X41839047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bcf664be30dbbc9892a3f343f40f8d13319cb8f8bd2131b68b73812fbe9c96. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR2X41839050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311fdfc0f31b68f4fbc024dc8d518fefe05b9f66b5754165d56f9929256be6bb. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:39:27Z), 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/SEXTE2001301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1b94dd9d20ad83cd7fdc11c03f906bad1af5536758f3e02dd7e1ab45a1fe89. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/SEXTE2201101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745b15baf696398f4f83ce80985a17b5f572f5f793209c75666d8ce49d413e9e. 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/SEXTE2201107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92272483d7954ff618f648e923b0e11984aaaac0cd0055f2b526ca02d659a83e. 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/SEXTE2201108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c21861302ffe57490b7c4643a89ebf34eb52e691b29e2dbafc234ec37458b4c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SEXTE2201110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa969a32aedc0c73c5762ddd0b18f212d79198aaf4a7b06d2892c66b7a355cada. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SEXTE2201501.