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 0x57a82de5d10660fbe87318d00cd1a2c3041f7514b45977b49d58b95a3a13441d. 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/027bdb32-9905-4483-97ce-fe44c2dfc36a.json and https://artists.proofprofile.net/proofs/artist/027bdb32-9905-4483-97ce-fe44c2dfc36a.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 0xa3f0ad91d582541b0eae0a68062576076ccc82645f31691a2e267c53d65f6b35. 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/TRA161800317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e7596b19de5031cc02748ea5efd2a04564dd68d6fd7ebc6df9415b180c665d. 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/QZES61894741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70162e8e38bbd2c500ab679f36cb3f1cbbce4b7802c07f80dcf188b4d8597f8a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZFYZ1956141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cc8a6a68e5c57187259fa2bf8f3c8fa88e24caff9a82a87646d3c2d49c0773. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TRA162000125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cebeea2ae03d2ea8a384af46332d64019f63e0aa6735ea97d65db56e2a064af. 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/TRA162000355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882a001824fa16ec29c4d22e6e553812bc36094a039eaad83abd13187d926994. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TRA162000399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606edeb87d48d03311826b6e7be3bfad250196c2f88d4d0693b194e51a6e6fb7. 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/FRX762127581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082439f95031a8f988daccb1134315bfff686544ea8f938570319eae901d2ed6. 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/FRX872154768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fee6c213210bbb5e583dd4db6657a88e247a769d7d27ab7f53b8b009245690. 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/FRS182169125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082439f95031a8f988daccb1134315bfff686544ea8f938570319eae901d2ed6. 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/FRX872154768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4febbf84ccd844d943d46053edc4d8d06aa4d457d25bbce2ce4de8bd9153d57a. 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/FRS182169126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb633b65135ea0fcbb900d667ad7a91e12aec45b611dd1b19152e1deb8755370b. 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/FRS182169127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9a88d5662525837780c3af277aa7b8f7062a4e3e54aa5d7e751fc3092141f7. 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/FRS182169128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64cdd8d0b815d63cd9eeef55a3392a9738475d33bef27e172ad3256539b7a64b. 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/FRS182169129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234c303c3793a72a2d77654148073157a25362d0c1ea82af24bbf02a1456bbfd. 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/FRS182169130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15402c3a9318a822b5175c83d0b8b075e5563ca98c8d19cde03375024342954. 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/FRX452151585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8f77e5fe15e3ce7ee81ee0eee3952ebbfbdf812efde82e2329ec656f186744. 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/FRS182169131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120215007e8242f0cf7b356c8c46bb61d49354f0aea76e27b7fbb96eac778f0f. 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/TRUM72000060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb86352b21bd03d600c5047a235372e0704d5a9bace0f69b8973f5da8975c3d. 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/UST8K1654640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21758170cab68e4d485ad6c05c81278fda3f53e4e99d226ebc258ff36c8ef58c. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/TR0061300536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120215007e8242f0cf7b356c8c46bb61d49354f0aea76e27b7fbb96eac778f0f. 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/TRUM72000060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120215007e8242f0cf7b356c8c46bb61d49354f0aea76e27b7fbb96eac778f0f. 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/TRUM72000060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8618d28f2fa28eb1ea4ea249febbe13726a7ae8e5a07da500ae272711a14b9f6. 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/QMDA62127672.