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 0xa5bcbd7bd1b034503352e6ca92d93aeceed9aa8ac52a19c263aa16e882f9f3c8. 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/8fcdf79e-f077-484c-bfa8-1a292f8bbc2a.json and https://artists.proofprofile.net/proofs/artist/8fcdf79e-f077-484c-bfa8-1a292f8bbc2a.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 0x5a30b852b77ef177e1578040b9055332dbc52426c523c1f56c396c627922ce08. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/FR10S1528367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652c91fc75c082f974b2b7aa85846e3028418f24cfae0fb1912c983d8b5c30ec. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR10S1528368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33f270036985430a63fdd5188379265ff38ddd3a7b7c4db0bffa1d6710c5316. 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/FR10S1528369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9e3e1c5044908f7bf8631f05c531d9796fb2d5c8f7ec2e047584f920c43110. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR10S1528371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3480c5c16cba8d3b0f5d2e0d848ce2d19ccb55bf65d043a485321954f827ab0. 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/FR10S1528379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4445bd71d61db0769cd9ed436e3dcbbd2d49f5ba631a74d5b22edec67c66538c. 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/FR10S1528380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8813ec62dfc6907cd00474da8cfa302b712ab652bbfc9af65dd52f70227b1451. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR10S1528382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f934cb05f3ffb6509a29725eabbdf981810115ad694e1ef732e1e856fa21363. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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/FR10S1528383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa101639a70f8d556630e8583ecaeca7154ea8071fcfeb4e4ae3ab8a37960ccc9. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/FR10S1528390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1467605a90bfd5e31512a8c1537c0cccf5f8581dbbff5800f800bb8566fba3a. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/FR10S1528392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71236e4d4ab568c9851805dfc9f7886f990456cbc3a6ffdefa9f0aa15f88da9. 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/FR10S1528393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f49cd059a021ddc484f6fb31769105cb851f6b82ae817074961e70341c5b68. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FR10S1528394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be3e033ca8401155fb3407f264035bb0527c5e9c90c893d084de7d1b7c6f6cd. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/FR10S1528395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd66ec4e5cdb80e93429464edcd66799afa5d77ed52352fa6b48a70655a8be8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR10S1528396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464ce12fd5f84fe2466572a4c358b95fc9c1db75dae494062578c03defddb3b4. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/FR10S1528397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07717474ad85be77075fd45f6daf82c031e64835ba5cf1d0df26a07b31658de3. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/FR10S1528357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10b7e585d863d3b6a42c9bd593b8ca4dffc77034894a889f20d1b7ee9680fc5. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/FR10S1528363.
Aku Ingin Mencintai-Mu (Acoustic Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f7568e0b2a4c0aa50203583093e52f980e29b38dec59828e163874c4648148. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/FRS182091778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3599e692a5263c89c5c4d8158ffb58e591deaadf2b66000386c7b29b17376d1. 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/IDB992400279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade1ee76372b63d1b35d7ef6ade6605f18871d5b927ac4b737eba069dd4f2298. 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/TCABO1344403.