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 0xe53195f41a8e1adc04c579da60d47000c30201d42e75b7fdac07e78867cc72a8. 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/c23d2fad-45b8-4cb5-8230-6eb4d7762368.json and https://artists.proofprofile.net/proofs/artist/c23d2fad-45b8-4cb5-8230-6eb4d7762368.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 0x496b521d24c176504dc3c5f8805a07fdb261dcd6d3b2006af6571e81f48d1fc7. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GBKQU1636184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10631addf65415fe3d289f4e884e072b3d70019f2ca9e4affcc743cf047693b6. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/GBKQU1744897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e93c023ba279f01d49a0fb13fac3bf1f9e9d7f24165134918fe7e145fdae11. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBKQU2245051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f3213339f79f128ee8531c8d4b357e5db09a441b32b833d2057dd3d615cf6e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBKQU2245054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3486b58c9ef453f932283af6c2c24818b023aabd31e5cb1e0baf11947e0e94. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBKQU2245055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18538a2e45beec9712136767352dda0a0228af91000dbbcb6dc440c3276daf6. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/GBKQU2374803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f82ed624f517e9040f2a6472db70840ee9229c32ef9fef167e929c81b33a6c. 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/GBLV62309271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9242e42965348299be8ed11d7d3531deda75c6f7a7cf31ab951edf0c2016d724. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBKQU2431565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5999232d7a12100f01ba9f9177f6f6f87dbf578d17ecd26ecd1762eba707b1f1. 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/GBKQU2460901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b95b0a70505ccb65db7dec45d1cdea7ab51c271299f85e97d09f0d9a2dc4c87. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T08:17:14Z), 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/GBKQU2486515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb530f75321b3c8fdb7955b9d9313191385619774b5bb5d5fb6a7235831b0bb7. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/GBKQU2548237.
The Sulfur Void (Alex & Purple Shapes Remixes)
Hadra Trance Festival 2013 (Compiled By Hadra Team)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eecc7ee44b5dcaec0eeb611185ec880fe6257d6bc89a337c14e8b331110cfa3. 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/FR6V81893999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e476daa30764df64a06f7151205906ad68f7d127c8563c1c887e94088e0ed1a. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/GBKQU1834948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32fba4d2279e34698c473636372479d4a1518eec5774108f66251cd6b385952. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GXBNP2402512.