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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf96fafa5aed17ae324a9d5a15b90743d8f2d49254cb79a95fd4efb218d3e52c. 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/dff472d5-bcfb-4304-ae33-5761e9d052de.json and https://artists.proofprofile.net/proofs/artist/dff472d5-bcfb-4304-ae33-5761e9d052de.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40631e856d30954375cb6a0ca378ac15894d17ee7074aec906184495ab8d1a38. 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/IDAA21500711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd094296e56725f2fb0eac93391035b44484a1b0ff7c8bbb5b14cf73c759b1dc2. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/IDAA21500522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9a0044fa78d080b6b6024ec57fdd5f2ce7120a4b546339cb6af0347c487b0d. 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/IDAA21600528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9e0400588e3580e0fc16fd641083f270bc172d65db38fb793c9dcedd325580. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/TCAHS2342535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641080445c26028ae5b1ec3f4377613061a21c3796d7369721b9e0e4d5fa7700. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/TCAHS2342550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e0ca8a0467d95994c70429a1aa52cdaff5eaaebf38ad808b56d1e05e3b0517. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAHS2342573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd065aff445324ec51bf0da05736036434e7c727d11a189a77c5a6fdd3837f3c4. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/TCAIC2474607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865020dec94ea3abb6c019aa33b5d4db85ae74f35b16026c9ea0a2be4e3073f1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAID2474641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd684d24238293e5737c78f0f9905adc4a8abb12aec7c0f3d5638542d4f8272a4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAIC2474673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffa570984923b8c0241ee299808d6f3b6e5641a9efacc7c4ad0ccf5bb00c7b9. 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/TCAIC2474683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcaba8158286a9f60051125c04da5b2b7b7d68ea8554c9425f0097f7186ff4e. 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/TCAIC2474693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278b8c2a66c8f3b1a677074c8482389a9fb1c3bb1c75c4ece80a61757bb85df8. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/TCAJV2502516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ad95e9aa66e200a0d46bbd89865ebc0e18f1c270a0d7e04eee2ac96b9d3ee4. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/IDAA21600649.
Andi Bayou Project: 25 Years My Musical Journey
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bce1b3c136451abdddbf12462d1ebfddb69d8a64abc0abc621770f321c2f32. 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/IDAA21400427.