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 0xb101b6aae15138ce42f460d83794da0eac5f6a84d9f8da09c6677068ed6e2aee. 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/50dc4f54-1df8-4a0e-9a4d-e0685c002a84.json and https://artists.proofprofile.net/proofs/artist/50dc4f54-1df8-4a0e-9a4d-e0685c002a84.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 0xf56d1b5e6bc79f3fdfe35f7c8c355b0dc3d707e9518b3d9e54e7d1198d81ebcd. 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/FR96X2124175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc8486606ab02f6a0385804ddf9ba71fa754545d14f272da089999a709ea2cc. 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/RUAGT2209624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae9e99249b3c10188fc899979215bf9713027ec27ab2ad405f9d663c28d4438. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QM7282471222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504cbbf81531ed218f54d13bfa25da6c3153b94c06b96fa159bd4ccc93c2525a. 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/DGA0M2477833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ff8a92f979eede52fe9fee0bcede63de62aaa2a5dd2a4a9abd14235d6537d7. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:42:12Z), 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/DGA0H2427476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143fb9322f374e7febfe44729d902876670f189c0ebcc6993470e228b88411c9. 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/QMDA62475881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b556250cc8e20e21593caf82c068dfdf8bea2221caf398c3fe281ea913e76aa. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/RUAGT2489203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733fd08c2ee1d1883645e3178c43431ed73765ffa35a08979366d5001f060db6. 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/RUA1D2506159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa087b5fcd4fc64ea2f3d0395ad4e3422752287ca035ada30704c5bd545f5c46b. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:34:14Z), 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/RUA1D2506161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2510764f43b3f01f524d1efb4ae4434b288f3d7c5e7dca81efab2d86606a3bf1. 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/RUA1D2506163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5224dfa6af2b8835272f61f75d00db59a2df09fff673e274fb50b042bc98267f. 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/RUA1D2506165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6069fa2db06708a2ef688831bbcee45c54fd4756b243a8134d516763628393. 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/RUA1D2506169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa223e157c2e7f5e97c03a1ec471962bc4e06f6cc8f675595dc0fb1fb5fb4f973. 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/RUA1D2506171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56836344db36685284b5046458617bd77fad5d130cf567f5057bfa826a665b60. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM6MZ2509734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c216520f3a065aab8de82457f09136321e50f393519b0162492b3670606eec. 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/QM6MZ2509736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e96e3ef67758b511593032d81fce045501804dd007b75a493f7a827cf4abfa1. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:58:19Z), 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/QM6MZ2509737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cad17b7bc2007b17c4a90b9801b967cabfce66669ff93d5dd735e5e23d31ab. 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/QM6MZ2509741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2622da6f89c1191296ee28e6852accc4bf4fdadbb2724de17a2d07ffc002dd. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:41:29Z), 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/QM6MZ2509738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1c8db1e14a378c2eecaf8e38d723afc54d0ef1d9b59f331801b0f6540010bb. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QM6MZ2509739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7099898ba8c9a1b619a39f37f5ce85825ee3250b1e757c2457749c98913e071. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QM6MZ2509740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05bff11d63260f177a7f473784fa995bfdd4130f13417ea01895949fecc21b9. 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/FRX202527038.