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 0x86d6197b3fd1439970c14da32bf23e6eea0b3b6ed7e943af92c403454d47d4ee. 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/9c902e38-2a48-4cef-ac3e-b7a2f2686afb.json and https://artists.proofprofile.net/proofs/artist/9c902e38-2a48-4cef-ac3e-b7a2f2686afb.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 0xe6242ea281be70c791e4b89d9627de4083979923433512003aa2a0238f39c6f7. 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/FRP620910000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4476362ca82d223bc0602662fad28952c6df33b74f299d2c4d7530502ba9542. 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/FRP620910020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a65e69c31541c0516b9de4dc1e3587f640da5e334f6007d7bbe8b5ba92d54e. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/FRP620910130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780768477fab60b01770b32940d85fd9f67baaedc3470f21dc83f999c32ecf5a. 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/QZES71839482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725980920dd5d2935de59423ba96bd20ba8fe1a309fba0064f2065b17d6b014c. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:05:15Z), 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/QZFYW1970998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82cb094846beae08413d828892744abe80ac664698a36e98a9bb9b54f37925bf. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QZNWX2012813.
The Cure To The Problem You Didn't Know You Had
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55316bd472f32c41d2da2fcb9e55ca37fb007c2d06cbbbe91fc89cb819b5f23. 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/QZMEQ2455467.
Life in a Bachelor's Studio (feat. Ghostown)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc81475f6c7ba693ee52ee525eda30a83a16831034f719c2e8660a1ef723da16. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR26V1521853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6736af3b99b04892af45d7f4eb9f5ea25966763ff3faaf0d94ead6a2f5af7082. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR6V81347649.
Behind the Wall (feat. Kalyanka & Ghostown)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39f6223d55fae80698b4168222d7c7a5a4d3549aa3866302ba6d7aeb3e61900. 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/FR6V81347655.
Abstract Symposium, Pt. 3 (The Dirty Man) [feat. Ghostown]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abe63f8592f07b731d1f2eb17498ee5de606f822da5f9f09ce066ae6f352a8d. 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/FR6V81347657.
Mes Nuits Tziganes (feat. Nawelle & Ghostown)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3b0270ad97bcc43b24d0029e2a68d47d40c8df7eea59ddd240d8c7d653a48a. 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/FR6V81354842.
Night Black Crow, Pt. 2 (feat. Ghostown)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fa464de92af1d015b3b392161da63ea28ecc2d1ee730bbf54ed714f9a7d2eb. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/FR6V81354853.
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