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 0x549417b37f31b303651741bd8201c61e9f62a7c9852238a9bd1a86721e244211. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e06c6f11-50c4-4c83-b9e8-d7b8fe8803a5.json and https://artists.proofprofile.net/proofs/artist/e06c6f11-50c4-4c83-b9e8-d7b8fe8803a5.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 0xd350a405e510112edf975ef67c184c3991fa5ebf82c66645dc93b785fef365ec. 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/GBKQU1866516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafebdc6f011a65ac8691fbc5c2104339ade920c7b621d64b8647f7175149465. 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/GBKQU1924656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5aa9962aa60fcd73184b2482f1abb8c62c40143ed34dabc590e0916cf7f7db7. 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/GBKQU1924658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a691dbfd757aef328e596bf2577fb45a704445db2b4dce2dd26b00f1e4a861a. 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/GBKQU1924660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086821fd570b84169b4bb3e10bd3d185dfeeaf2acacfb11e42d8411a588f99b2. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:36:44Z), 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/GBKQU1924661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7d3301e75a2a1192dbfc06a23ec2490f8e1a181b20b403a03552a84ac6cba5. 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/QMDA61825344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bafc5a041f56f48cf58f72c01caa87ca6691e73ef78cac2cded08d34553640. 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/QMDA61825353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51290c279370cfcc85026b32ad7b20106b6ede3db06586a234f0f132ad16521f. 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/GBKQU1527327.
Nobody Likes Kicks (Mash Up) - Podcast Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfef345969ab4be842e1288735ff786336ebf848908b58867646aa943a32295. 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/GBKQU1853638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e458c30a3f06c129eac14af28c189f6e9c96ed4d9e124af9290d2c53966b5f. 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/GBKQU1853655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f863b4e6a8e7d2cd713087d1cb4589d9051714f1e61bdaf77a85d8e45adcd7. 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/GBKQU1853662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde68255ea656819cea34bb5e8ccb62bc7a4dfc3a520331dc0c389c1531ce2dd9. 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/GBLV61724571.