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 0x244eac15483e3d4b9873571730eadc9d865826d26a5701716c28ef6f880b0f2c. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/081e06bf-96c0-44b7-b3d9-6a757110b675.json and https://artists.proofprofile.net/proofs/artist/081e06bf-96c0-44b7-b3d9-6a757110b675.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 0x297883c76321e488cafcd2c7cbc07966ac0a47d89f59ec05b4371cfbfd985819. 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/TCAHD2306006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469b29386bbb81c5ba5189262ef1ff4ec7ea6cf95c7267d3e06d8d755c3712f3. 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/TCAHD2306011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1b782cdfaadca5276734fa9564938f06ed0ab67a09a554c1c780a6b99066d6. 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/TCAHD2306021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49347623f6878e29387b68501e963da1dbb73ede56c9acfe49a2a9afe568af43. 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/TCAHD2306029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1054d7fe6f27207e7e380b3f5ac5f1fee08b57ce667572fc092d71fb806be8a4. 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/TCAHD2306035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc630a52725ae86f56ccfc5fb039ed3c528f32a662221c1f5bdcd6adb20725570. 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/TCAHD2306044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb033c5e3cdc11995222de562f2a992c3ed9c3d38ad9d377ca8e62a5020828e6. 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/TCAHD2306050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867a5cb9ff5573f827dc58b94f41a7da7aa402cc53bd3f2e919187fb90c76141. 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/TCAHD2306057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7211b97b3f2bd21a62a9627e597898e1d50f41a75d73e8d9935a3338a7cbc0. 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/TCAHD2306074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f83c06302efa26ac0a3dfc5829791bbd7a4aab7a35271ada784ac13e3bc428. 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/TCAHD2306081.
The Countryboys From Nashville Tennessee
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4597e1849ca6bf37be74a1b61838507bba5f6d634840097e5147c1ffb7aef44. 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/DEE378701580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c76ed7ceca9482a89e0259ddbfbd9ac87d0a1e064b7456a8ee0918a58ee78a9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:43:22Z), 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/DEE370800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4156d870bda3b595a86423632b73885e20210092f20d9ff7063a75950c2e09db. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:32:31Z), 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/DEE370800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44485322c20b58e586e350370ee53e38c1fb3bffcbf805c3e7724998eef179c. 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/DEE378701550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f4955b69a561d77922510c6a632f4afb3d0792954d36234eb82bdad34b9802. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEE378701560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2836ddd16a0d49538875f09665b6f7071af52419988d1eae483269bc97eb29. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DEE378701600.
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 0x87c4d01fe6b235cab7b214682aae2f033adb7d6bf72dbbcb12f7629dba540a62. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/DEE378701590.