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 0xd7774994715d0b6e47efd0fe4476e68cf3998d695e41b288176d10555be4407b. 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/fcd49fe9-9222-4b04-bd42-ddb873940b45.json and https://artists.proofprofile.net/proofs/artist/fcd49fe9-9222-4b04-bd42-ddb873940b45.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 0x8b258aba193bca7cfb3f24412a5583032a7eda00b60a15a50bba77e7ee9846a4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DGA052057643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cb616184ed781ea44072c932100d5190151d9f4809ab0c121c1ca3f265b16e. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/FRX282154908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fded8300c2ea48301bcdd411ffe6e4927f015b9e78a9976218e6ca569e6579. 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/FRX452188734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1371dd3fa94cab99b799d8b25fa8a18d3cb80539bf621de845d4a503cf83da4. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/FRX452188736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709398bb74c6bdc8f271706c3bc1b899f8860f6a16a82f4c74fd64e5c81db658. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:21:32Z), 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/FR2X42298915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c6492a8d3ecf82b86fb3331ff5e9a082293edf38c853893ac4c8f715257310. 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/FR2X42299169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fc9b1155002ba6a2e861daee5676bd9436789085051d01c42afe2d16c0c991. 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/FRX202248403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fd9d32de6ffa8cf80b9778baaa3be58e78c3b8434092951f058993c561fd4d. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/DGA052262234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b9ac5987a931e3193eb1982f257e9abe21cd5561e0ee3a3aaf962786138d52. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/FRX872320685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46e44e63a5abc03a4e0c3db08d3e91c26de268ffc01d241b3943044f82d8770. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FRX872320688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ad2ae073bde7fd791c19bab8c1cef76297490d2219a57e1ae20ca9979d96aa. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/FRX872320689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacc4fc8b8b0fb8e11796b62803f93d35ae54a06bd25ea9104ef486a767d64ca. 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/FRX872320690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0759a024e2a6f99ce953bc5c11c62d59007bd62ff9d8c9e516c1b05663cb7c29. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/FRX872320694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63c1da4df5c138553943a86c363b8745a8cb4b7067e11aa912f4b1a96dbe4f9. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-22T00:40:26Z), 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/FRX872320695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43cebe7bb921a866bcbee729dacc10a589180b228280fa44c3306e8fd5329f6. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FRX872320698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e5d547aa29d441a756bd5eaca2d7375a1ecd6cb8241545b52a6b323f626e24. 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/FR2X42422515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116bb0782e9a07b2599933f63c53a528f6fd29cd91def3d6eb1873a3648366a0. 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/TCAIU2418258.