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 0x8ea58e3f50eb82e23ca1484b54eb3fc38255c5d092c8d45be2cced3771ba6ec1. 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/a113466e-8531-400c-8b69-3b485cd20290.json and https://artists.proofprofile.net/proofs/artist/a113466e-8531-400c-8b69-3b485cd20290.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 0xa341b7a717f6c949f336511f271b4cd8ce0945a2f36bb10d0a412f21f23aec93. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/PLC062228624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52bc86aed3e238bc2eaaa5bdfef8e95e947ac28d2889502577e9113a0fa7f96. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/PLC062239162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b2e4038365cdec48f1fca07c2df262fdba0ff241920a30c034bb5c61087b5e. 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/PLC062254120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2455baadc3ae9f0bd5f22be3814922ebc401201a8d3a2ca96439b0bc5b1407de. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/PLA282300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd160663f48aff7adf56cf00960a25807d36bac7cb34c08141f3456c1c0347028. 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/PLA282300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee975bd15b79d35c26da353f886e36849c919ca2b9f7b9fb4759e8c711336db. 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/PLA282300133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769b7c0ecb9ad19d0ab5f76844aa6eeb85e8aa33bee82eda4f7a9b000e2a51a5. 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/PLA282300173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15df84cdc326cf85767e4e57acf63e7ccbba3805a0e29609f82c905885041004. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/PLA282300181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f67183139c3c7682250239264b9333efc779a3f44719d9f00c68a2f076a6918. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/PLA282300185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa6a314208d0e0f9decce77ff02aa89599327a44fe4aa51863cdada349106db. 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/PLA282300177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b149eef7bf01eaa0d9b9f59a62dde0bb5167656d6664e52fac446c78dfa4e3. 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/PLA282300175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141f2672d68140a127b6477bf39352e3b85f9468bf22e059f87e06f6e3289795. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/PLA282300187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43cf1f1b2f5fa29108f64095dac725ecb80a546eaf81c0cd40b14204e6faf720. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/PLA282300283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f980aefad2ba1fade2e7552555825729818c2989aaeea5537393a7efa26620b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/PLA282400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f31ac745efe14c86ea3a4fb89c42206f60cb5009d255ef7a7512ff32a66882f. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/PLA282400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b3e6901a932bbbea68783b343cefd409c2383d5a89fe580826bb36b90cbf17. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:32:09Z), 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/PLA282400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53071de07ad354279f90bb57104ddcfa948920f527f4129e1c654b47851207b. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:31:58Z), 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/PLA282400146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0ec4b3918473c33cf7a8a7f7e716b2c670dac1c78d0e2e60c383a06aa47468. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:52:14Z), 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/PLA282400223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a31999d6b7e747c8cafeabae0b3542eefd88b44a92ec4e30dec1fcc88c7af7. 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/PLA282400225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcce9b131f6c180eaa5e33e1c94b3e79c1966eee190d9ad2ca2ffb06cb66758b. 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/PLA282400249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1253981ec50aca5d902bf2e088f883977c5ace5b0658dc1de46ac840b323eda. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/PLA282400251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb65768f6fc2e65debfa22526d27d636dee0d6be432d75b226ec06d922e4305. 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/PLA282400291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955ae25528b43df10f88b6d0b2ba1d8a28a769406be736f42000fd2762d009d9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/PLA282400293.