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 0xfcaee740d0aa67a4d077b438171270ad18394ac36d7b65a072e64b60f9ced5b3. 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/e3f8c3b6-ef9c-4d6e-ba7f-1fc5adebda92.json and https://artists.proofprofile.net/proofs/artist/e3f8c3b6-ef9c-4d6e-ba7f-1fc5adebda92.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 0x473148398ba1e487432b47369b52523dc5a5d0a8ff00e3acf70604eb6c7b791b. 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/USWD10935813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705234b49d47d96743b20b77edfd62d5fdd592beb4e44108f9e513afa5f8b401. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USWD10321049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20466d0fad3eaf758d091c1b8d9869edacf6381cd905a6ca3b7e9c8933b72c14. 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/USWD10423317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705234b49d47d96743b20b77edfd62d5fdd592beb4e44108f9e513afa5f8b401. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USWD10321049.
Forever And Ever - From "Pooh's Grand Adventure"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2aaae7732ae4e1c2a574a143945f03c50ab38f6b383bb7ab6946bb4689e1dce. 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/USWD10220317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c632dc1b10c6fbaf47e5a4062dd2b75c2d646a846bdb1548bf1840ec12571f0. 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/USWD10220318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e135d0fb6c21810ac0093859605de371df99d5250dc70db60fc0809bdc74481. 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/USWD10220320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefd56c869b0762a4b08a25574805c4c0ae4ecf1a2fc3105bf9e578075886855. 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/USWD10220321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc826efcf4f2cb1fb51d22f81dc00ea4d288176e4de3a9381e43392f73e435896. 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/USWD10220370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2aaae7732ae4e1c2a574a143945f03c50ab38f6b383bb7ab6946bb4689e1dce. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USWD10220317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c632dc1b10c6fbaf47e5a4062dd2b75c2d646a846bdb1548bf1840ec12571f0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USWD10220318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e135d0fb6c21810ac0093859605de371df99d5250dc70db60fc0809bdc74481. 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/USWD10220320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefd56c869b0762a4b08a25574805c4c0ae4ecf1a2fc3105bf9e578075886855. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/USWD10220321.