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 0xc055d4ee7144bf270125941ad3d9fec081342a1c749c5b9aae90c260b347ef07. 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/e81d2845-6de1-4255-b7b0-9035fe424be7.json and https://artists.proofprofile.net/proofs/artist/e81d2845-6de1-4255-b7b0-9035fe424be7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dwarf Hole (Diggy Diggy Hole) [feat. the Yogscast]
Dwarf Hole (Extra Diggy Mix) [feat. the Yogscast]
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 0x7d07c4c9a72238d83eed7345f5973f7b8c5afe5e1f3036552bc697569c3d8c47. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/USHM81202899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16bdf15df04c24f26eeeb1c7292c0e02e3e39a51307a779ee2484c2de864c2e. 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/USHM81202905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a169903e761742d37f91f124f910b3a75db8d323100cad7e8039f61d98f33e. 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/USHM21359685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d58c89f1166e3f9576ce347ec95286bad6bfaf0a3dde2e90a780165de7a0ff9. 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/USHM21359703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfc398148d6e8598786c84ac6492731a1139f759e71c82bc00b6c9355731b61. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USX9P1323200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b53b8108c25d50240d1ad5b0d6a29a41c7be0f9af898aa15531f7634e6589d. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/USCGJ1546889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bebe689c880e061354aadc1a9b8d0db6e1803c3a5f48243e74c39d339fbed1a. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USCGJ1546890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe924aad1f95ce65e6f6c6b051fcf0e1b1ff7f54c8e53ed1c0bd2e465fd2b3842. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USCGJ1546896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892fe372dd3a25bfa4d4db05a92090acb999fba986976ffaec2d6545f96b7ab3. 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/USCGJ1546902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a61d6ca2b2f803eef6ad28028370ffb4199ddf32d2a438b9e648210afeced7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USHM21546772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc661f6540e6d39e2f2a4a59020faf6ba47885b771a41f2af04aa0de683e6a37. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZNWY2554984.