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 0xe2b8bb7352525c2cb52a7c32a56fb62633459cc2d39fc2ca558e0be4aba81247. 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/49a38c48-52a7-426f-96b2-cfffcac13fc2.json and https://artists.proofprofile.net/proofs/artist/49a38c48-52a7-426f-96b2-cfffcac13fc2.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 0x6d9c0eedf3b3fc431e185bef5d1c21f0b0a4db3b2d98ffd8b4f9f515d3a35201. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/FRX762243849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46ef6d2c2d03e22e7233755b5c00b1237a0fd5581df713226de9474795e0b46. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/FRX762243850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed5e21aac857f1db385d6da0ad3e02d8c65d4099d3ea17ebdb2b3280b184508. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:08:18Z), 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/FRX452226115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ae8ba05110769d8e64281af929d32b78c2b61fdfc949eedb361f1bce755e74. 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/FRX762243852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405619292b84fbb0ffe02ba9b68df90aed126ba8b4dbec916a9077de4b26e9fa. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FRX282240078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abab734816cfea661b2825302a858142795412eefb757ad5df3a4f4a99df41a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR2X42222075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad87a61e9c29f11651dd63c4a168384889427cd925e65288eebeba0ec4b9808. 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/DGA072251884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a897a89013ff256a50cd9e45bcf0ba2d0c4a8711ff90269ba0ea4507451a252. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/DGA082271850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2ac90e60e01e3c8cfc3c2644146f7f1eaeec2421faf2c348724797025fa121. 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/FRX452385559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109a176064f567f1690b9f4cd635734a4cc14bb3c263ed1301139ff603e8e33f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FRX452385561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23a5660625fee148867f408ff8db9be0f018035f1a5279828a823c1970af38a. 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/DGA072387588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef3aa4042f098e75266d7e2e947bdc8112bc47be3269d1a563d35cf2028d0c2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DGA092374023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d5dc63cb4c4c7897f75ed01d0af2bcd203e4aa611fc4b0bb4c1195842a63b9. 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/FR59R2414910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45af1c18ffbee421f1adf10bdb2c52f2cff275526d17708f3c784d61ba2055bb. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:33:16Z), 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/FRX762464035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f06c061d57eb7ae27ad36cf171b80059f5b5449c68af44abc09ecab3dd1e27. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FRX762464036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28ec6e687f6096a465c5698ac27d90c5f1c072c3f40de180eb8f183ad797625. 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/FRX762464037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6637474f9b6055367dc41cf3fce92f05480ba592efd9a8f9a365e84d7d7fa072. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FRX762464038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab742a1803f3398d74cdc75fef674d9e04da587eacf47d099fbeb8780ea0db3e. 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/FRX762464040.