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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb87839db26f0448f2bd985c627d1acb717ebb78bc2e18db3e18d66ac3c47232. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/afd398dc-deec-4578-a4b4-2040ef547658.json and https://artists.proofprofile.net/proofs/artist/afd398dc-deec-4578-a4b4-2040ef547658.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Black Country Kids (feat. David Tristram)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7730db83a82ae6a667f6f47c11b325f8940460810faab9b416d59b1d790485a. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZHNC1927332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad2e24a528c84077a82e30579715f7cf647e01f6329573e5d2f79f36acc4599. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QZHNC1927336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc582ee0386186fef160be7a9c7c2fb0c1e912ae4b8d5bc33952949959fd1b78b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZMEN2158274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe3523c2a9d139958f4c213c85ac3275c0d70cb89a7596edb8a1c21c5f39df0. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZMEN2158276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c3d2b29e9d036336307f23bd5f1e7f1e09ff3dec5dfd4f48a5854315d33743. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZMEN2158284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cf1e04323a00547bf2f5857cab41b6278503f46884d6f40a7f99c857394bb1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZK6N2547409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71d1808d8af4c157e567ac078bea4bfb9a9d8ea7f3585346b7b540ebf98a9ee. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:34:01Z), 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/QZK6N2547412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4f137d3bc5536624cfdad49b9b15db215f7680d145ce7ec8d218116413fc54. 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/QZK6N2547413.
There's A Bar At the End Of the World (5th Anniversary Edition)