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 0x835c40f2bd970e609e1689e1b23e6d1b17cd22f0c75e6eaa42c93b9059c17f7f. 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/e7ac1771-baa6-444b-8075-e78f530ef3af.json and https://artists.proofprofile.net/proofs/artist/e7ac1771-baa6-444b-8075-e78f530ef3af.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 0x0cc45bd97ff844c3bc89ab8c63e6233da3f19225ac65adcd100aa55985d60636. 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/GBKQU2505785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2105af25b70c85a08b08f23e48eedbe5592e7e90f9163afc5fab9c9f01e492. 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/GBKQU2505789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf17b2ddc3f9dc10e68bb5a212f3551eda556efb51c2d24e7218fdb232c50cc2. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/GBKQU2505790.
Shades of Blue (Osan & Martin Mind Remix)
Shades of Blue - Osan & Martin Mind Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1f3371174b1d7ab57d36d4a0bc2e6b7bd0adf6c332bdd19b642b5c010b1fa2. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/US83Z2514774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08537011a7722373f250d67320f15e2be82acae11faa599490d509de0a45c5bd. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/US83Z2514773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde38af9d03263a6645a48873e5f132672f22fc76489c93a9ad6df0539b91a38. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/US83Z2514772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1f3371174b1d7ab57d36d4a0bc2e6b7bd0adf6c332bdd19b642b5c010b1fa2. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:51:26Z), 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/US83Z2514774.