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 0xe7ef1ac20a9d7207cd02e823c0966ef27cc203b6d5961e50c27fdf0227a74fa5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87d560a2-9c5d-4fd3-89e1-f655577807ad.json and https://artists.proofprofile.net/proofs/artist/87d560a2-9c5d-4fd3-89e1-f655577807ad.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 0xd8bd9d47d1611450d88dabb8beb66dd7d3e5eda8372f1b7d87abb2b6e43167c2. Chain 2 (Bitcoin): anchored in block 957550 (2026-07-11T09:54:43Z), 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/GBKQU1688163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca660a7410ad079113a5a0a6314b931d19ed27878c986034a3578f4ff2a160f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:44:06Z), 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/GBKQU1688165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed67b8a8b6c84d99afa49954aeb9377a160185aa74ae77a3f55aacb5811a084e. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/GBKQU1688166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368f36559522b2c4cf1341e7fd81abe130d857e55873bcb1bfc745530ed27398. 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/GBKQU1688168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033aa6046a19c102f04d598552a9f30f3c5c3223270a10aa42813ab3ab2d4766. 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/GBKQU1934130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb3ef3b437b517cd4e8576f9054fbda251dfaff33c1d5fb79892f61df7e949d. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/GBKQU1987313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb41246abad9eba1092b8ba1e9871a051dbc587802e071ae666256ab5ffe335. Chain 2 (Bitcoin): anchored in block 957550 (2026-07-11T09:54:43Z), 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/GBKQU1987316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95987868cb1affc29c904870ec0b2457fec592d0ccd4a4e1cc35f4b126b129d. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBKQU1987317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270fa454cbb70db6c5c38c51ba456fad3b814388aca3f277dababe7c11b15f14. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GBKQU2085755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3293882a5a27cc6e690890d3cf977de2e843a4734f9f06289a8f0f7272d6f25. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBKQU2085757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c03672bb6a143b80f2aa4348a65aa7d7511dbc68b6fb1ce5f4721a02fe7709. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/GBKQU2085760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2c72f282102b94882c8535b663c5c0fb6d5177e4834ea2578bec1e4a612cfa. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBKQU2210163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82549df1976a031b9d9224da3495639e1762a4adeaabb8660c7bef5f2c6f8788. 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/GBKQU1481832.
Psyculture Festival 3 - Double Compilation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac520bdfb42127d79bf5e7f19495eee8c943da13e7644608e7d195e8482a1a5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZMHK2348634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3e2822593433c62361eea4431dcc4ccd7e503acc5096ec7e5b156f03f0ef4f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBBYB1602550.