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 0x98498f54ecbfecfc7df596e2a598ea78efa01a5c5a97f0ef1132c6d621096ac8. 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/88c68b85-137f-413d-bb7a-aeb6c9a3a2a2.json and https://artists.proofprofile.net/proofs/artist/88c68b85-137f-413d-bb7a-aeb6c9a3a2a2.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 0x161e40d4f197abee4bc2e16dda9de3369cbe7a278897d37efae35f5fcb81d012. 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/QZDA42495531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6d404495fbe36ada1c7dc4643396dd227b5c636821819f4100579e010346e0. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/QZK6P2444068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a62afdc825e2d2600c26e3e3e699d36fc2e2717c050df7cbb0b7779cac0f1be. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZHN52477607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384617fb369a102d82613f1624a740fadc88193db1b43fd6a82845c31ca0cdb6. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZTB42442550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4995345d6566f48c1229ef752671c6852a9a7a67758cd0edbb47b1fb96f2a6ab. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USAT22409906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf975c8024a55d9ccafb82feecbd7d978842d25bd67c702cf4d47272a945f7829. Chain 2 (Bitcoin): anchored in block 957613 (2026-07-11T21:37:58Z), 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/USAT22409908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ee16c66cbd95d0b2266c95405ffe5de0d8988384f2e94e3e77c1d3350ab5dd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USAT22409909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75402396a4df5a4241d72e6336aa16e97a25ea0b259f4cf6268d82a34f9579e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USAT22409912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8b3490a0def14b25c9e2ef47eb2f9f4a01b535f7ff16ba97aeca5d49bd18a8. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/USAT22409914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54fbc31f2bbb7040beefd67d1e44bf1ab0675a3445bf0812566e87f46b812dbc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USAT22411049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e13f8b161c60536cf93329592b5ce895840ca7f63bff92c3721ca454f9ec3d. 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/USAT22410643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e0b56babe93529b6bcd464ebea8e4e2173e24192817ba46fe00d16bbcbdd50. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/USAT22411202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f0c27b65574a76351eae0ba60738a2cc956d11ee9892fca02bc6bd7909af06. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:22:49Z), 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/USAT22411047.
Traumatized Remix (feat. Hurricane Wisdom)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7dce670b8b8194293d376e6f9dd959f09124c8a4afb29262dd2f4148a1d496. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/USAT22501452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9af304336b63e6bb7d6d72920c3c4794dc21ad91055b43e29f8bccac01c7b8. Chain 2 (Bitcoin): anchored in block 957531 (2026-07-11T06:55:18Z), 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/USAT22501454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f4401e728a88719b767b892b432cf6686a226bbf31a5bb5fb5590b505ad5e9. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:24:42Z), 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/USAT22501459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcdc3289ce2e78023f5c7ad0fc8329196e019308fb7c85eae81aa71cb9d5809b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:45:30Z), 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/USAT22501460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f728e19ffa9018ef2ef6923a07177b5669b072d3098a98108d00ca8ef7953b. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/USAT22504319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e6612bb13aaf48fc1ccb4526c45e607eb0c88831a6035155b0ecefa6da2de7. 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/USLD91768160.