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 0xf8829ea7b9a6e83ed7358b0de3201b0030007629880c0737a633155913777dfc. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc9700a5-d3a7-4dd1-b2c6-057449d5b597.json and https://artists.proofprofile.net/proofs/artist/bc9700a5-d3a7-4dd1-b2c6-057449d5b597.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee0daff58b6ef6fc811da13c6ba4f21d1303fdb7e7711b3a56c6e66f459a9c3. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:47:08Z), 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/TCABQ1356546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17505b171d6382e444eb243a5f575d421000d261215a282c3349c072b18553ad. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCABF1235000.
Home in the Islands 15th Anniversary Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ba3469d3cab2ea0461b0d73e7f2df54056ef97c5b265fa579242ca18cd1e7c. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCABH1290446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe635e3aceeb913237e39fcdb3a7fa7ebc25288132f1d58582bea6364beea932f. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TCABH1290447.
Henry's House: Sunny Town - Playlist 1 - EP
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6d0f8f2632727ecf863be1483d46deaca716aca20d7146149a3c8e963f9526. 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/TCAFC2015678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1991b8ac8eff410ecfa39e7337d2d1500861440190285934f5945390c01d2686. 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/QZNWV2336002.
Lahaina (feat. Mick Fleetwood, Jake Shimabukuro & Henry Kapono)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8b5072b4fb8c27ac768e86b6f68456868fb0a18e8a4c0468c9c7d977fca240. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USRH12304782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6690cad58b774061caebd168d94ebbbeea884d1bb3a9b2a5ef91caa10b26b6ef. 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/USAER0710645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4758d703a1786c22cdecc9e3abf88682849b6f28dc568818b3f57c4f259360d4. 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/USAER0710646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36944eb63c12a230b3db95f5c01fd3a1dd7981c488a34c74980df58547c06ef. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USAER0710647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf115daba737d357302bccb30cf056a4b1c97aa3480b9f1c3c2b4e1731a1a41e2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USAER0710649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122b2727c69d835cd2c737f6eed6e655b5aba134584a97656025c7946114dd18. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:49:34Z), 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/USAER0710650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b0134c9076f55a78c74074289e58a9c17cbeae6a413e6ee5b5fb185f0dad0b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USAER0710651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9c89d357cd113934b95316ff5447acf6e1007b013dc36be439d5fb23ffc01b. 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/USAER0710652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1864ba48dd4c8478ab8ebd20b7086ded5aeb0b95197ce6d95d33c1bd9ab5fa76. 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/USAER0710653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c1beb378f9e09bbf1cd93c4af98cf628821276c2c6a5048264ca72c2b8e4e8. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USAER0710657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cc8a0856ecd0f49d1db065a16df9d4c1c9d162d19384a95d1df93adb3bdc72. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USAER0710659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2f12b72b533792617534cc99a3c4cac3ed120ec6ba9bbecabe44edf5ac6013. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USAER0710660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3348c92c56076a410d6e110dc64541968782c5aa52a794e5409e007a6dad414. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/USAER0710648.
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 0x293d68327dec0003078ab3e0f867e6d920e7deceb519ead0ebb6ac68511888ba. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/USAER0710655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060fd4913b3bd823b0fa01fd77daf506dd42c7ea1823c0cf56491c38efe07671. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/USAER0710664.