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 0xb86ba14e9ec821ca9763607a81b889d2fe7a6620d121a6f251871a6cfce24f69. 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/9189f877-7cb2-457c-8242-3c65779db74b.json and https://artists.proofprofile.net/proofs/artist/9189f877-7cb2-457c-8242-3c65779db74b.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 0x354a4904edab66895a349d0d8e89b1f6f5a2c24f3fa210b4120042a2c6f0d4db. 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/USHM82298528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4a9f0fec86c204eb2cec255fd593c41f9f650b6b4280429f660fe4644cf8da. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLRD52355142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21aa8cae4e862d5ab3a51baf044f2bda2a89140f7a8cec87b9e1b731d9c4af7. 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/NLRD52355143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f630fe2ad4033e6631ec6f2fd1fcc1db64015654c1122195fe1d86fc75a35e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GB2LD2320326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb955e2d070b2fd92052c50fd7743096530b6daf4b0baf1f9d67d6bfed1caff04. 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/NLCK41050706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fcd58496e81b0c7d4afc1689651feeb8ca0c2ea742283df5f1bbad479983365. 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/NLCK41051482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79f075c05648efe03cda2fe3f3b403620e62a95fe6fefca4b8bbd9e336b4709. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLCK41054851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3325b917a77ca63b040c8bb447af05bd5d7ee49ccc7c0a4597a5a43ce84e2a4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLRD52413814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf9803e410a1f9b802cb2a540faa76019265e91936d652ce8948c165cf0788c. 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/GBRF52200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a040346d2f9f0769947acda067c022c463405268a38e669192ad0c6b7f49f8. 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/NLCK41401009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa1c327f2c580ee590bd9d80eaec20e417b0ff21f72df67398606b01adbe70e. 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/ATME81100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717daa3385cf394ce1131a638c24ae2a54247230c27cb16011176f990df883b2. 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/GB2LD0901892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebbf7769759d19f45ad0c9d5ed897fad62e009a3c91b4e1329e10bc56736c2c. 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/UK4AJ1400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffe75178917304a88487fa8a935e88264ae650055562a1d066cc3fb675db19e. 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/GBRF51500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6cfde30839dedeab3b77078a489e23f03aaf52640dba1555cf816ec740c749. 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/GBRF51500014.
Liquid V: Club Sessions, Vol. 2 (Mixed by Artificial Intelligence)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6688b24b06327dc0528a03e4836d389619e95dc78220714bcf36212db9d44987. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBCEQ0600156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d5b51bf0319115a967c267868fef2a28601955768a9decd703c258ddba0d90. 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/GBCEQ0600138.