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 0xd80c0b338352c80b98069e1bc87e5004ecfc183e27da757855af9d5e4fc5e185. 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/c71515d9-bb69-49a2-9181-76cb10a5bde3.json and https://artists.proofprofile.net/proofs/artist/c71515d9-bb69-49a2-9181-76cb10a5bde3.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 0x6b153fcb132d3bd667e203232e40b563dd76ccafef7cee2254a9d28b827d7818. 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/QM4TX2441873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3647ab84145498dbfa9eff4ebbc5bae7363d09f9e214f9f94b156efe9ac7e98. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/ATI211508208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26dd87444202e930f4148994170d7c25cdffa239d23cecb59a18199d5e2bc0bc. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/USUYG1052310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14432305c0e558c9ffaa6d3cb8fb082707941f9c3e3d29bf47ba72dbbcd4f9d1. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZWDD2408970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e04af72b2a159c7c141197cb48c7567b120f9a000b79e60ee0f7574969728d. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/DGA0P2333718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d423523872f22924ee1107e178eeb224daaecdc770d30dd7979402037b12485. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES7701300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be9cd1b516138a03c874979aa808e0133ca52fc2011e72f2943d3dca8ae9777. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEZ651365495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb546ced235700ad848d9d6bfcfec947fe4ce188c245722635d73d2483e51d719. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/DEZ651365498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf3ce50dde61a5202b3cd5b3b37f7c5fd8ad022bc6e113148907cb28d9b3d54. 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/DEZ651365502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbc2d08985a6088b0292f2bbf9362ebd40ba9983045e99596ee47d45f52fa39. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DEH261712009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d6e5d5a11cc15f93111dd71d523606b2d60f5925d0e346ee1f1bd3982899d2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH1801200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b4f8b2f01ca2ac71b7d795004e7b8703f9838b8c4a8d2ef1311677c50192e9. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZ5AB1862722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1ad5c0457e7c99f2cbf30ff528241bad0d436ba2d492336e38c254c3125dc5. 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/QZFYZ2059333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b2372cd4a60eec4daa74c501141daf93a431fb59acf512318de6afa566e6f4. 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/TCACK1547576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527bb3da05cfc1153217b724a7108d3c8b001752d4f4e73e1b2599044a2dc681. 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/TCABF1278723.
King Size Dub Special: Illbilly Hitec (Overdubbed by Dub Pistols)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e5ea3bcf515965fdf9ed975520b94fd8a8ac5d6fcd74ebf4f6cde4d55b9ffa. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEH261511119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4003ba53dbcc05fee43422c5870934cb89342690e437692b6aebe24a134376de. 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/DEH261914212.