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 0x03e7fff4ccc88e3dd3565224f6f1d3b1cb2b0184ae8d70d6487c7482700ee64d. 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/451e953a-5bb3-4f7c-aca5-7db6d4e24f4c.json and https://artists.proofprofile.net/proofs/artist/451e953a-5bb3-4f7c-aca5-7db6d4e24f4c.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 0x9cce9d373890f5dc0dceafc9559edff2c068e290dd399e5e671587dba710e357. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/USCGH1824027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1352140b88c89821ac5eb464275e3f9be080794e2a679cdf31efb75e11192819. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZFZ32093780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec75eaf35be3022e1acc57fa6b7e091a666515783f51d39f79dfb3d90a670c9c. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/QZFZ62066432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c8f9fa872d43249e2917b6c40702660d2e71179322275fad4fa96c9b51d13b. 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/QZES72010331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c8f9fa872d43249e2917b6c40702660d2e71179322275fad4fa96c9b51d13b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZES72010331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88be16efc732e459b62b19af60d538d24905949b8b58fdc6cad09d6e0c6f0170. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZDA42108634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11eca826c0d0182fe4847211c739084c9d7e45b976cb6f5c087965aad400feda. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZES72183626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be41079ccad8ce8ac7076f4aa04947b1da1ac7661f0d144928b09aa8c527d6a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZK6F2118438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74723c3e260be58ef9dafab397923be37bd6dc59a5d70c4ef9ce0fa4128ac065. 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/QMDA62132729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1633b3188b75c82d3900614f5af04ddd08da281ae6146809bcfcb59e9b0c41ac. 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/TCAGE2221302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6211cfd06c92014212399ed77143be4a759063d67cf821a913813dc4ab33fd. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/GBRKQ2218906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c8dc75ff67b67a96afcb8dad62402cd6f36740b2e3462ca813ceb7685360ac. 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/QZTRX2216013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e3208eed561535da3aaee12955839e4dbf43de31f00707643dbd54fa382915. 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/QZTV32351913.
Stay Humble (Live at Muffin But Good Vibes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74723c3e260be58ef9dafab397923be37bd6dc59a5d70c4ef9ce0fa4128ac065. 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/QMDA62132729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb714c6d9bd868589983ddf0c31f80928dd544b4f240c7355fc3daa4caeab5bb. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/QZDA82476255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0876a0b520cb11172ce7f13975a90c3bd3a8faa53b666d575bea8c21e4882772. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZ5FN2550147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a942b035c957786a7b887d81977b6aa2e49814092ff8792fa11f4acc2e95d62. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZWDD2545281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001aec18985a602d47c708bfa3f9780abcf4f15fe23ac8ebc3e22f6ff6da5120. 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/GBRKQ2511168.
Cool Breeze, Pretty Girls, and Palm Trees
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a7a42c1e1f260a7bfd434a2085ecdf5f93115baa1de069e468946ccc66f02d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USLZJ2156312.