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 0x898c3d89a209407d2f077f1482ae17a1dab7ab330a2673fa2ae4e39350e59521. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8020a287-5e78-4a72-9126-536d1971fadd.json and https://artists.proofprofile.net/proofs/artist/8020a287-5e78-4a72-9126-536d1971fadd.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 0x8b5fa56ade4237254f82894c99fd6623af999586e2e605b267f739f0c18c492f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEVU52235028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359b1fd53a758285be258388a824c8f926892f04f721748ee3acf4f9fabfa8fe. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DGA0H2346701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0989d5be073d795111f31cec1c4e10ba55595fcfe76aecdc6ac99dbffcf5b04d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DGA0H2346804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2c321677d256394289e3e504af295207804513e82eaa61a648b346869e3f9d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITV952300248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836509f2f966328c10873a52fc8a7c23702bd85b94e5c01f3333e536fedb016f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEUM72311807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa80dbb2bb27e7adbc39d1fb13e1c06e6ff2f83df9d917cbd3ece6f48d6d5ba6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA0M2330171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370a66edc2fad6adde51f217228877ea2c6be317cca2cfaef1937d830370c750. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NL5WB2300176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8417ed2226ceeecea63882a175afbdcd10c157008f45e9b212b9d04479a34d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ATB152300553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eed481c8ad9957e5653844fd8962cedbe9897d5644a108a6a2e67b589f8dc77. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAHH2310744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3795237e87eec4363a9712c1be871954001bee837e012d9923c11fcedcf78189. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLT2H2300505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b370c742831744513f43f2c9886fc6cffdd1c92fce5fdf3bc9574c30b640de4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLT2H2300469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ea9f6f1d38d7a74f417020718a8c1574fe096eb3a1f8ea8c4c5ac957ff8b0a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GX8LE2359386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75eb057ee985f787e998d88380b1ff91439b7bba836fd228bcfa03b03298361e. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DEPI82306865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a41c1f75e9835cd326ed07d605ce9ad10efdfac3d29ecce67ee1fff3875164. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLT2H2300359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4927bea152899fa916e3f44165d3bd53bd5c7cc40489d2ea5c6abd1451ec1930. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLT2H2300173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7c87dd8b0a3012e972813230c9510e0a5a2c9e64d22f8b765d9eea7c911ae4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GX8KD2398422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88f729d8ae24c184859d9ec6dc45b1dcc4cd86996efd87b452262547580f1ff. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLT2H2300150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4a346abba19e79202798084a4c72b3c41d8bce5f872a3432f95e4dd3f612ed. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEPI82301909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2f7a1afb663e7fd350592743ab6a4d29925225bb1871234d474c4051030fb6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLT2H2300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ad2136b4248a6eb2289674d90bb1c570444af7405103cc4957f9643bb48590. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLT2H2200864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2616c9dcb3f94e082715a61ec3175132fd8736dbc21b25a40282c355f2505d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTAX2260707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc568103db0a1fcfedfc6fc680b8082ae69f5db2ae6cad81df49e6f64f97fe87. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZMER2247693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2adbc0b07504c0fd3de92ce6579214e7412ff58ad72a8a6efdc791b7e81cbdaf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6M2277173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8691411a822af16d07d50aeff615e0be41073ccb1cb4aaeb22b1ac215a4ff64c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM4TX2265296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c32010ed6db48676d3d55f36c6bbaa65cfccda5ebd0a582ba23403bd9264e69. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GX3HH2280265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2562d32e5e6dffdb224115b825ec943c1532f0f89e00be8893c9a79f3611523c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CH3132100536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291305b7f992e48f25171f0de397e9f3703063d285349aaa6f655a13a45c8dce. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZDA62201266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cd1cf8c08e1be7700a86dc0230a733d1eb85852b64723824fe29e4d8efc979. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM4TW2243402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca825095798a78f3b642a4ac3285e910794f6bf56a14286994f66c9669b8ee9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLT2H2200071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ea54115d5642d429d41f31a0b6855c69b77c9e36c2ed3003796d3eabc6ca34. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZFZ32226712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6a374c1ef2fa1417ba00df4e9fda4873d7f5c143ce1ffbf44f830baf2e4687. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEXN82238151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2384196df4b0840acdd1eef5a4ab1408ca24e6dcecce345d0599d308f4a3909. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFZ22272767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c36a2c0d7e56ec1040a836f5efd3d2a19103e447a1e3f1316e984ade8c0e19. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZPLR2175740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bce43d2e4be94fd54f61b9711746d8b0ea5e05cdd72d33b6e5b95a9a650ab16. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLT2H2100858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d197052dabb4ce790783654554658327a770e2eecbd8f0bdca06282e545693. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMDA62121692.