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 0x9940976489b19a0ba3b7d2f37c1d48722dee9a3c83a42d1d9b3cf8214b2272b1. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc766fbb-cbb1-4eee-9bea-64b33b71e066.json and https://artists.proofprofile.net/proofs/artist/bc766fbb-cbb1-4eee-9bea-64b33b71e066.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
You Got To Love Me (miida and The Department Remix)
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 0x135ba2fef0bdf888e27666b443f25d7e29678e51124279bd50eaa7dcab1c9cf7. 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/FR9W12308446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49f2adadbfec1d5cc0570a512cc6fe95c1a24214b2e64fc56a60206aaa6b194. 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/FR9W12308448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49f2adadbfec1d5cc0570a512cc6fe95c1a24214b2e64fc56a60206aaa6b194. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FR9W12308448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ec2a79f18f7aa45886f872b16d93eb995a665f219459c7f4157b7b148e062c. 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/FR9W12308449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135ba2fef0bdf888e27666b443f25d7e29678e51124279bd50eaa7dcab1c9cf7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR9W12308446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ec2a79f18f7aa45886f872b16d93eb995a665f219459c7f4157b7b148e062c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9W12308449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b604b1c511130f4249b61a65969b096950a6ec34851de287c8c74307ec755b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR9W12308450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135ba2fef0bdf888e27666b443f25d7e29678e51124279bd50eaa7dcab1c9cf7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR9W12308446.
Étretat (悲しいくらいダイヤモンド) [featuring クニモンド瀧口]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fe4b8c29dc0ae86f51073877197bcd5781c328e8aa64ffd6a6b0fd20b1ae67. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/FR9W12432850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640503a0799ffbfcc39be09d414e050baf7e06e32312f05bbef63614bf9bdaa4. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:18:07Z), 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/FR9W12446887.