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 0x6b8f2e4522f676edd5f003bd0df4ab04274206d0652b92d380756479f80e6580. 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/eeeb633b-e670-43a3-b9fd-a7ec21d480df.json and https://artists.proofprofile.net/proofs/artist/eeeb633b-e670-43a3-b9fd-a7ec21d480df.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 0xfff39864d77d89629e83988abdabd439bdeda3306c280ee69ea9a3a043268a77. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/US4T79526203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853f13a4024118c20f48226419cc4e67d912c7bc126d93cc378940d977661043. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/US4T79526204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadaf1f012c98bd025c0208a4843e87de7073a756cd66f89cbc39ecec7ecc6821. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/US4T79526206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ba0412b741a09d4c69be17ba3bf08867763476a156079fc971d30715426a0f. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/US4T79526207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1204f8cb22139335bf7da03a261976ab3e7b001778afb217adaf6fba34371a6b. 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/US4T79526211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5520337424f5f9805419ce3e2476a33eb692002ad6f417b800fbdd8714cfb3. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/US4T70026403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463e7a3e26408ccabfddb195d90ef7c253f84703eff4a242dc7e1d136cd28c71. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/US4T70026404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de149374e2b0129d063f78f8c83594378b5bfb6f884c58895cab668086d88da. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/US4T70026410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b06e7c0b1d1b2034d97615d3285898db30bb173fb986eb83352b6a8763f32f. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/US4T79726306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30812a24d9a756bd0d6d2cd51cac64bf24f52ea936fde841c5972f66472f430b. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/US4T79726311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ce647be3676c10d922ff3b8946080981dc7fbd097cd9ec195561959a95a8e7. 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/US4T71312306.
2004 Hawaii Music Awards Compilation Of The Year
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd0bcb64a95604daaf18ebd97ade0f040674e8a037a07969111d7f1a953bfc9. 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/USAER0710708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19b4d3eb928084af2450b718b30a7e7a82fa8c4f87ba6c300cb0bcc7d4e7e3d. 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/USAER0710711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa03183d3c3d02f3a244a014232083888c74d5b50dc574e51921276eeeeb365. 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/USAER0710712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd734e5c24078fe469ea91279749df73f34b18379eb3e184624a5ba950375ae23. 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/USAER0710713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02c87597d48f7116587497ce3b936e1fd816e211f01b62b92f8c01265b60126. 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/USAER0710709.