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 0xdfe35e852bcf28ad97db9bc1637606d30c135bfe90bc1875e27a8b07a9cb9147. 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/fa525af3-43c4-4480-9128-76e17a7469e8.json and https://artists.proofprofile.net/proofs/artist/fa525af3-43c4-4480-9128-76e17a7469e8.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 0x2870613f70ac603668ee05aed0550f50305c6de4b80bb206006cbdfc0dd50582. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USUYG1144436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647807e8e10de18d045ed38ba936522232ebf8538b42fbe401a7e33f2a1862af. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USUYG1144441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14353e48ff1f503f860ab653a6908e36bb1c6ab5ba6419f3a5cb7f7c2916c7c. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:50:31Z), 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/USUYG1144438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b3c22d767c89e6009130765a10b090ae8ccf1ba54c735608237ab5af3e6c45. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:41:41Z), 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/USUYG1144440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1a7d0f15c812d79ba1c77df97016bdb97bca31c93dfff87284ce332a4b0690. 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/USUYG1241638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6c63a371c12ef327a75991915bcfbfa7741a2de219d3c40c0896474d639d3a. 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/USUYG1241639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044bbc7361be2322baa6a1734e9d89b63d212823c8b207a501ac01f279d97639. 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/USUYG1241640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0de93bc171702353b0c0fa3699993c18287b25b8fbd9f1508a1bd89274c5378. 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/USUYG1241641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc81544693dc6641f793537358364b5eba47a9824a2abe5bf44571c3f035d5b. 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/USUYG1241643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292a917dea49b47b445f623960c5f3de43d98d0416b6ffc8ea5cda1d1bf5899b. 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/USUYG1241645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d796f8cf311e0b73cc6541714735074e31c87c34a8b96829153fb422776277. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USUYG1342058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9dbd38f4b7bbf296d7a91cfa21c7edef55ec67ecb18dfba925fca4d91d35fe. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/USUYG1342062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38f35500dc8d03d5ae84e76ccce1293bd54e08af2bf7df0435c765786ffe5a2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USUYG1342063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d97a4f13c177e4b2072b27b7fa18742ab99056628904efd7d09479a44d593e5. 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/USUYG1342065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2031531e3a88b1c180dd813563a45f4f8ef8352653edc96a07927e21ee3a8465. 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/USUYG1418362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575f11d2e9993ee79fc0f0ec8ad090fc908fd7f1dfba5d040c81046fcdf44917. 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/USUYG1418366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bc1c8b135123667574374135468f127584e77344d6a4ab4ad48c866ff2ede1. 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/USUYG1418368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abcc3da662b9c44523994b406393f7ae88544207e4adacac25ec404f0107500. 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/USUYG1418370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82d6e97e0d1fa3c20ec504f34b994d15905c1206149373f7dda42df9262e1cf. 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/USUYG1418372.
Bang Bang Remix (feat. Charles Drew, MC Random & Apakalips)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bca4fdd4156ee7babb919b62226b0acada71f4c67c109d560e416d5e8d1f0f. 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/USUYG1418374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebca3d0b98366e561f76f09ac6d3e089b924fff4001909c9dd9d19e26b971990. 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/USUYG1508715.