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 0x8887e163b1188d4d2e4929801eb25d6fde971d9a19a4f5db52e9edbb2897190c. 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/552c661c-000b-45ac-b77b-c5861735adc2.json and https://artists.proofprofile.net/proofs/artist/552c661c-000b-45ac-b77b-c5861735adc2.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 0x4f7003e7665fc406573c40b92c5b4baad053a7ee94ae9e9a9b3aa8e5e66ff037. 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/SE2WJ1400701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8ebd0bcd59b1eee4d36cfc24bc2fea5f1d22aefb8a1d446a864fa6073ddfba. 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/SE2WJ1400702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb270b089bbf94867ce7823ad05aaf3adb18a1077d6d9d90d8ace41476c3ade1. 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/SE2WJ1400703.
Sideral (feat. John Talabot, Axel Boman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7618e27bac7ebca8ec686d50ce529f1ba55d5261a4ed3451516890835b7bb28f. 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/BEZ351700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2bc769b11c329168ee048a58f67c7932df5156eb59b7fda05cc0ae718d4401. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/BEZ351700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a32c0ae1ee200a34ab5f1eee58cd2115f1f511a4ae8d5b2e86bf8239bddfdd. 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/BEZ351700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea4a6884d648385551336c9f7a863f187d3b945a56c0d9ede9287b05d4e6c87. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/BEZ351800096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea4a6884d648385551336c9f7a863f187d3b945a56c0d9ede9287b05d4e6c87. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/BEZ351800096.
Brutal Chugga Chugga - L.B. Dub Corp Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d7c31489c3251965b2f3b51a3b6a7c94e60b23f8d6f52398645056129fafda. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/BEZ351800094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2edfd348c906a2e5eee1e7973a1d80ce915a0caab434eb4bb9fb620b7cba3d1. 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/ES70G2300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486f19178a994eab5c2dc6a9dd351e8b92e37835a74a79aaac5a0a73ae7e2e06. 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/ES70G2300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73977e67e69dde59b233c555b6e8d200833697cbb05a0fd787393c6f92eed529. 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/ES70G2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dab8daa8ca41ff3563fe981159b183d0b849bd48eaf3ed260364704b057248. 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/ES70G2300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd029b2148a5dcd6a8d0b5a870f7e5fed31f816ec3f85f83016039068c5a9ad51. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T15:41:47Z), 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/ES70G2300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d4975104b5fb49c3fe55ed3006bf4272390657b29af6324bec8ff2bd5c44ef. 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/ES70G2300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe069aa0c8386d73e0dcdc4ba99862e47f4cfdc7d166cc9f43b141aa26ca16a4c. 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/AUXN21800146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8274285604e6a03a0786dd6a4f2c9b962115a641cb7896c7a72e8ff9809cb8b. 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/DEG931390851.