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 0x458647e8a63be80a077a27634a1175239a94ca533800f8cff6c5991939390b8f. 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/d7e3e0c5-eb84-4acc-8d51-53e3515267f2.json and https://artists.proofprofile.net/proofs/artist/d7e3e0c5-eb84-4acc-8d51-53e3515267f2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bluegrass Classics featuring Jim and Jesse McReynolds, Allen Shelton, and Jim Buchanan
Berry Pickin' in the Country: The Great Chuck Berry Songbook
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 0xd1bd3be16c41c55c67cd1b80cbe699c7f9f4d5d77a4903b6af8c175ec2b94994. 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/USG4X1500365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e9916a9b65feb84fcf3e9cad389b462667b187658a8e175b70439799593885. 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/USG4X1500369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1883d38ab5090c32c486e4cd626b5cf27c0e925a910e79e21b58e41e4cb051. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/USG4X1500373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a026c1b60ebae53688313821b8cc592564333ba1f30f2f903ebeb8bb1c18509. 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/USG4X1500379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb01617a583ec3b67357afffe6cba8159911ef5cc4903ef15566803f5609d2e. 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/USG4X1500383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b43ce6ac5719b26044e365479f4fcd5be3f810a5035c4060a30e6cbbeb166d6. 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/USEWC0773871.
The Old Country Church (with The Virginia Boys)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d151ef8d1a69a18294750842429111fd4d893abe370d26ddaa44ca0fe65973d. 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/USG4X1300421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb402be8322d3124229b451093c132fd819e7a423b6bf122fb98f39911979af. 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/USG4X1300422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebff9d0601dfb1b6eb88a19d4e4a1dffc94a30a160608f74e0a55b0d65939989. 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/USG4X1300423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50db6b5eeee0f39b545142a04acc7b3352bbf19331cc590c8cc40a5b4cb9b16. 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/USG4X1300424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7667f960a7339d96b014885f673df9eb0f3322061a8411b47d0e5de64015ab97. 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/USG4X1300425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e165b9909e26aa4defa367eb208566f86596d115694c0ee851e002845ba365. 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/USG4X1300426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0998b3dbf491f1b6afa02f424ea829236fccb497d90f042bf00cac6d6f0caff5. 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/USG4X1300427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585379e07e69ea9e67d41ea1abde8ce6239374fb7e21a9d8a76cb60c2a242aac. 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/USG4X1300428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966b64b985c3d40bad1eb85c66766e3cce786c78309fb51eec4e37b4765bba55. 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/USG4X1300429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0f2c3296f99875f21c878648daa2eb3ac0b750d9282ed38cf23e9974969b0e. 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/USG4X1300430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffc0802ecdbcf01637b243f9fe7feb71388f0855bd4e893890d1b1f1443f8e1. 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/USG4X1300431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31450012152ff7b0b8ea268a820023c9ff8126459945ec40b9edc6bd69d1b21e. 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/USG4X1300432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602561785cf4d9676b82fa9949e853a840adac9a44f9ca2a15bb69d47d58ff87. 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/USSM16400227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426dd79ed612051bf973da29ba6736945fd7251ce47c8546a2fed9d6f113edc7. 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/USSM16400228.