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 0x5367f455c18a1c049e02fd0b7fe09d642133f943dea90fb46ce315487c12a84c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70702013-391b-46e9-bf20-62e82b2802ea.json and https://artists.proofprofile.net/proofs/artist/70702013-391b-46e9-bf20-62e82b2802ea.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 0xbcc0ff4fe2814186d07ab1c976de660c636da07e8f8d41fcf91df48b2a3a1442. 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/GBLV62304039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6753bfddcd88f87fc28c53af0b86586b439beee154d35567b9ba4d051b393c96. 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/GBLV62201449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566aa88ed7b9083a0df47ac74ac031c7c3fea98c0a0a424c24f6ac3c9ba1ae08. 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/GBUM72102927.
Sad Songs (feat. L Devine) [Sleepwalkrs Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e5c985d49f2141e47a1ed7385d1e3ce8302076756d4026b95af6e259d9e748. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBAHT2001108.
Sad Songs (feat. L Devine) [Route 94 VIP Remix]
Sad Songs (feat. L Devine) [Skream Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73bf35961ad47fe092850f620cccfecbc455872ec998e39c7c68bc0b38ad027c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBAHT2001007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d51e8392bf26dd403ebb64ded3b425787811ff6097ce9672cd55a13a4cfc468. 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/GBCPZ1916836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1452c99b9411798542e6d7acf8ce651aab5974649b2d7923e3996be4db79568f. 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/GBLV61902068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e07d17a4149eae561443d72ebb72708fcdf624dd407238a8c34d5cd087c0ec. 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/GBQGW1310022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5bb51402cacdd5e4e4dcaba279f565ab81023c196e5cb106cd849159cae426e. 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/GBQGW1400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82a3ace628e04e4675b4cc2742474bbc2b584c941faeec894b206c6a5040a41. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBQGW1400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbaf77515ef2b87b2dc3938c1fa1c37be034b7559d858deba6c6851d470edac. 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/GBQGW1400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c80c8ef9ad87879d814cbcb0bfba828cee3349a08e073233390b61a193426c. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBQGW2400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c401d0b62c2bb81673b346a1c17929a4f5a64fe6981ed052c16242974cecbb9. 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/USZ4V2300127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c401d0b62c2bb81673b346a1c17929a4f5a64fe6981ed052c16242974cecbb9. 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/USZ4V2300127.