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 0x8a262454fca53e790403d3aba21fcfb2ddab21a25d6eb80999970bc4d42404d1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4c0af439-b331-4dd7-9db0-8debf5e5fd9c.json and https://artists.proofprofile.net/proofs/artist/4c0af439-b331-4dd7-9db0-8debf5e5fd9c.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 0x737a7c32984f4c3eea6c4c233c5ce11d1aa88e6e5d03b71e035f9e74aa1ffad5. 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/USLZJ2474927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1a4555d22038247f1bca030f70592baf5c9e07edcb198b6208798828e5f935. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USLZJ2474930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5ccc71c36274cf9aed4696aa350d5d1c2cc943292695577f48614306e2a186. 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/USLZJ2474934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd678baef0f33be28203c3583e2e3adb744eb4117a1518c9c8f12d92420c4bf23. 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/USLZJ2474936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9f9f06dc8af443f5437a16f491597f856b23a4651119f6564bb1221d8924a0. 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/USLZJ2474937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794ba8386ad89142cfbbc6eb4d6507e2a70cd87937389760a266c545425dd9d8. 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/USLZJ2474940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4a33fc114220bd610ac130580760edd35bc17a8a2a92235913ce8a15c26c2f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USLZJ2474942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33180467cad2984748ac40e5fc12e5e4eed09f729d8d1ebf3ce505da8dd4e2d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USLZJ2474943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4055527867567d2e915d084e8f98a637f92a0d585db5053614e570cfa891f7. 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/USLZJ2474944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea84ba5539b40bac538f53747426dd5f5720aaead7680e9686e2b6333969b0a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USLZJ2474949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe206408a036b614342f2b938471c55511990f7e1a5dfcd6be68cb89b470124c5. 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/GBRKQ2416427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd71533057c848521c2ab9fd4a71b135b3a2bd6e4ea70df52789c77e5e8d8fce. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBRKQ2416431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fac1bd60310364fe9395d733be596afa2f1c81063f04e8dd963b82f36838d0. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:12:49Z), 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/GBRKQ2416435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e66eefce8b293cf54d91e03c117a40336ec963a9684d38048a358dbd04fe6d. 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/GBRKQ2416443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6467aeaad3dfcd2cbfc09df461dc8d5d89fc4847cc3f1607fcc73eacc6af50bb. 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/GBRKQ2416446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20b87a4725247947f1c7427b43b5c8f71ae75b8fe6d12507e248b252335714a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBRKQ2416449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeebcbdaa34957f59eaa644742a611e86ae5e5c01598c8bc8a21d1166b9bef98. 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/GBRKQ2416455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb617e5662d4c966449957822b60925759d29bd382d6da192bf251af0b9406078. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBRKQ2429306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5fe2df4f4e7e9c9180ec0f707107471cd222a40049f0206f14c47cf2be004f. 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/GBRKQ2429308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444c2b73361a5910d9f29875b130effa41d8c00cadf42741ff4356fe1e17b8dd. 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/GBRKQ2429313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abe8fa7496815c46a12769cdf726d52a6f514267eb75cc060f4acc2077613d9. 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/GBRKQ2429318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa761545cc6a4f1c48f1e64cd916525860f911c8715b46977539d51cf981580c. 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/GBRKQ2429320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc866ecad956f9686c8114ed1965501274364e7c22fca5dfca72eecf1477240bb. 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/GBRKQ2429322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7f66189c42d49f30fee1523c8ca35b923f0372d59eaeeefb8e8f18f648296e. 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/GBRKQ2455084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d24c5106af5c73f05e93b6a2218a6930981dd2cb9ffd1eb354ab35183f7dbb5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBRKQ2455085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c819fd22c218c3c63497994591ef5ca7d0c382ca9949feabc6c494da91d193c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBRKQ2455089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeccc9fc16beb35779e738c417c5df2dfffcb100fafe5c2c61cafe0405d5fa41. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBRKQ2455092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb993b7f522e80b74d8a015a0f1fb33c18992a74e84791f697b87eb14e6a1286e. 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/GBRKQ2455098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a61d9ffab2154967a164f708991cbcec66795875ff82550b701ea6c2a90f8a. 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/GBRKQ2460001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba91f2ea50f9fd4cd90b780c2e20ca0eef98c4a4305379cc15bae6c54c20bbeb. 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/GBRKQ2460006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fe306585882bb39a936452c04e6cacccf82eda447ffb4ed35d9f8ffcc6f900. 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/GBRKQ2460009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0835db3320dd4d37b5de91126dd3df20dd20a72ccf4a873dd0e11a3c8df8d59b. 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/GBRKQ2460011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14c173b374eba940ae053bcad1977e5027deade1a64c8cde2fa1d5665039291. 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/GBRKQ2460014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205ab5b0bfd7cb4cf9f064078e236d0b6bb868fdef88690f233e01779248dbad. 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/GBRKQ2460015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2745f09e0a0d6be9d58f174076f9558c300adeb7c41787d79e9d77c111581747. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBRKQ2460016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6d907665b4e0d7a0e43ad4bc6e7f8f6276d0eabfb2d477dba1c0575504012a. 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/GBRKQ2460017.